0D - obvious deed 1AM - Air Mechanic 1st Class 1D - One-Dimensional 2AM - Air Mechanic 2nd Class 2D - Two-dimensional 2G - Second-generation mobile (cellular, wireless) telephone system 2LA - Two Letter Acronym 2Lt - 2nd Lieutenant 3AM - Air Mechanic 3rd Class 3D - Three-Dimensional 3G - Third-generation mobile telephone system 3i - Investors In Industry (venture capitalists) 3M - Minnesota Mining and Manufacturing Company 4D - Four-Dimensional (usually three spatial plus one temporal dimension, sometimes four spatial ones) 4G - Fourth-generation mobile telephone system 4GL - Fourth-generation programming language 4WD - Four-wheel drive 5D - Five-Dimensional 6D - Six-Dimensional 7D - Seven-Dimensional 8D - Eight-Dimensional 9D - Nine-Dimensional \a - Atto- A - Ampere A1C - Airman First Class A4 - many, including a European standard office paper size; see entry A10 - Atlantic 10 Conference aa - Afar language (ISO 639-1 code) aA - Attoampere AA- achieved availability,Alcoholics Anonymous, Armed Forces Americas (postal symbol),Aruba (FIPS 10-4 territory code), assembly area,Automobile Association,avenue of approach AAA- administration, authorization, and authentication,American Automobile Association ("Triple-A"),anti-aircraft artillery,Amateur Athletic Association (of England),Asistencia Asesoría y Administración (Spanish, "Assistance, Consulting, and Administration"—Mexican professional wrestling promotion) AAAI - Association for the Advancement of Artificial Intelligence, formerly American Association for Artificial Intelligence AAAS - American Association for the Advancement of Science AAAV - Advanced Amphibious Assault Vehicle AAC- American Athletic Conference,Army Air Corps (British Army) AAD- analogue-analogue-digital (CD quality),Australian Antarctic Division AADD - Adult attention deficit disorder AADT - annual average daily traffic AADAC - Alberta Alcohol and Drug Abuse Commission AADC- area air defense commander, amino acid decarboxylase, aromatic L-amino acid decarboxylase, Australian Antarctic Data Centre AAFC- U.S. Army Air Corps Ferrying Command (1941-1942),All-America Football Conference (1946-1949) AAFES - Army and Air Force Exchange Service AAI - applied artificial intelligence AAIS - advanced airborne interceptor simulator AAM - air-to-air missile AAMOF - as a matter of fact AAN - American Academy of Nursing AANEAS - Anglo-Australian Near-Earth Asteroid Survey AAODL - Atmospheric Aerosols and Optics Data Library AAP- advanced acquisition plan,Allied administrative publication,American Academy of Pediatrics AAPC - Accounting and Auditing Policy Committee aar - Afar language (ISO 639-2 code) AAR- after-action review,Association of American Railroads AARP - (i/s) American Association of Retired Persons (now officially known only by the initials) AAS- Advanced Automation System,American Astronomical Society ("double-A-S") AASPEM - advanced air-to-air system performance evaluation model AAT - Australian Antarctic Territory AAV - Amphibious Assault Vehicle AAWC - anti-air warfare commander ab - Abkhaz language (ISO 639-1 code) AB- Able Seaman (both the rank and the occupation), Alberta (postal symbol) ABA- Adriatic Basketball Association,American Bar Association,American Basketball Association,American Beverage Association,American Bicycle Association,American Birding Association,Australian Broadcasting Authority ABB - ASEA Brown Boveri (Swiss-Swedish multinational company) ABBA - Agnetha, Benny, Björn, Anni-Frid (Swedish pop group) ABC- abstinence, be faithful, condoms,Active Body Control,airway, breathing, circulation (see CPR),Alcoholic Beverage Commission,alien big cat,always be careful,American Bird Conservancy,American-born Chinese,American Broadcasting Company,anti-lock brake controller,Associated British Corporation,Atanasoff-Berry Computer,Atlantic Baptist College,atomic, biological, chemical (see NBC),Australian Broadcasting Corporation ABCA- American, British and Canadian Armies (originally),Army Bureau of Current Affairs ABCS - (U.S.) Army Battle Command System ABET - Accreditation Board for Engineering and Technology ABFIST - Advanced Bradley Full Crew Interactive Skills Trainer ABGI - Addington-Barker Group International ABIN - Agência Brasileira de Inteligência (Brazilian Intelligence Agency) abk - Abkhaz language (ISO 639-2 code) ABL - American Basketball League ABLE - AirBorne Law Enforcement (police air support unit) ABM - anti-ballistic missile - Asynchronous Balanced Mode - automated banking machine ABMC - American Battle Monuments Commission ABN - Australian Business Number (a number issued by the Australian government as registration of a business and used for taxation purposes) ABPI - Association of the British Pharmaceutical Industry ABRSM - Associated Board of the Royal Schools of Music ABS- acrylonitrile butadiene styrene,anti-lock braking system ABSA - Amalgamated Banks of South Africa ("ab-sa") ABSTRIPS - abstraction-based STRIPS ABV - Alcohol by volume ABW - Aruba (ISO 3166 trigram) aC - Attocoulomb Ac - Actinium AC- Adriamycin-Cyclophosphamide (chemotherapy),Air Conditioning,Aircraftman,Alternating Current,Altocumulus,ante Christum (Latin, "before Christ"; see BC),ante cibum (Latin, "before meals"), Antigua and Barbuda (FIPS 10-4 country code), Associazione Calcio (Italian, "football (soccer) club"),A/C - Air Conditioned/Conditioning - Aircraft AC1 - Aircraftman 1st Class AC2 - Aircraftman 2nd Class ACA-Affordable Care Act, shorthand for the Patient Protection and Affordable Care Act, commonly called "Obamacare", Airspace Control Authority,Airspace Co-ordination Area,A Current Affair ACARS - Aircraft Communications Addressing and Reporting System ACAS- Aboriginal Children's Advancement Society,Advisory, Conciliation and Arbitration Service ACB - Asociación de Clubes de Baloncesto (Spanish for "Association of Basketball Clubs") ACC- U.S. Air Combat Command,Air Component Commander,Alpine Club of Canada,Altocumulus castellanus,Area Control Center,Atlantic Coast Conference,Automatic climate control ACCA- The Association of Chartered Certified Accountants,Automatic Cloud Cover Assessment ACCAC - Awdurdod Cymwysterau, Cwricwlwm ac Asesu Cymru (Qualifications, Curriculum and Assessment Authority for Wales) ACCD - American Coalition of Citizens with Disabilities ACCS - Air Communications and Control Squadron ACDA - Arms Control & Disarmament Agency ACDC- Alternating Current Direct Current,the name of an Australian rock music band,a term for a bisexual person,A/Cdre - Air Commodore ACDT- Apple Certified Desktop Technician, Australian Central Daylight Time ACE- Air Combat Emulator (computer game),Allied Command Europe,Armored Combat Earthmover,Automatic Computing Engine ACES- Aerolíneas Centrales de Colombia (Spanish, "Central Colombian Airlines"),Auxiliary Campus Enterprises and Services of Alfred State College ACF- Administration for Children and Families,American Car and Foundry,American Culinary Federation ACHT - Average Call Hold Time ACID - Atomicity, Consistency, Isolation, and Durability (in databases) ACINT - Acoustic Intelligence ACK - Acknowledge (telecommunications; cf. NAK) ACL- Access Control List,Anterior cruciate ligament; the initialism can also refer to an injury to this ligament.,Atlantic Coast Line Railroad ACLJ - American Center for Law and Justice ACLOS - Automatic CLOS (missile control system) ACLS - American Council of Learned Societies ACLU- American Civil Liberties Union,American Communist Lawyers Union (pejorative slang for the above) ACM - many, including Association for Computing Machinery; see entry ACMC - (U.S.) Assistant Commandant of the Marine Corps ACN- Airborne Communications Node,Australian Company Number (number issued by the Australian government as registration of a limited liability company) ACNA - Anglican Church in North America ACO - Airspace Control Order ACOBA - Advisory Committee on Business Appointments ACOG - American College of Obstetricians and Gynecologists ACOM - (U.S.) Atlantic Command ACORN - Association of Community Organizations for Reform Now ACP- African, Caribbean and Pacific Group of States,Air Control Point ACR - Advanced Concepts and Requirements ACRI - African Crisis Initiative ACRT - Advanced Concepts Research Tool simulator ACS- Affiliated Computer Services (NYSE ACS),Alaska Communications Service,American Cancer Society,American Chemical Society,Association of Caribbean States,Australian Computer Society ACSC - Army Command and Staff College (various nations) ACST - Australian Central Standard Time ACST - American Cooperative School of Tunis ACT- Adaptive Control of Thought (cognitive model),American College Test (ing Program),Australian Capital Territory (also postal symbol),ACT UP - AIDS Coalition to Unleash Power ACTD - Advanced Concept Technology Demonstration ACTF- (U.S.) Army Constructive Training Federation,Australian Children's Television Foundation,ACT-R - ACT-Rational (cognitive model),ACT-R/PM - ACT-R/Perceptual-Motor (cognitive model) ACTU - Australian Council of Trade Unions ACU - American Conservative Union ACUF- BGN Advisory Committee on Undersea Features, American Conservative Union Foundation ACV - Armoured Combat Vehicle AD - Air Defence - Andorra (ISO 3166 digram) - Anno Domini (Latin, "In the year of our Lord") ADA - Air Defence Artillery - American Dental Association - Assistant District Attorney - Americans with Disabilities Act (see also the similar but non-acronymic Ada programming language) ADAC - (a/i) Allgemeiner Deutscher Automobil-Club (German, "General German Automobile Club") ADAGE - Air Defense Air to Ground Engagement (simulation) ADAP - AIDS Drug Assistance Program ADAS - (a/i) Asiago-DLR Asteroid Survey ADAT - Alesis Digital Audio Tape (recording format) ADatP - Automated Data Processing ADATS - Agricultural Development and Training Society - Air Defence Anti-Tank System - Australian Defence Air Traffic System ADB - Asian Development Bank ADC - Aide De Camp - U.S. Air Defense Command (1946-1992) - Apple Display Connector - Program Against Digital Counterfeiting of Currency ADCTS - Advanced Distributed Combat Training System ADD - Analog Digital Digital (CD quality) - Attention-Deficit Disorder - Administration on Developmental Disabilities ADDIE - Analyze Design Develop Implement and Evaluate ADDNS - Advanced Deployable Day/Night Simulation ADF - Australian Defence Force - African Development Foundation ADGB - Air Defence of Great Britain ADHD - Attention-Deficit Hyperactivity Disorder ADHS - Attention-Deficit Hyperactivity Syndrome ADI - Acceptable/Allowable Daily Intake ADIZ - (a/i) Air Defence Identification Zone ADL - Anti-Defamation League ADM - Administrative - - Admiral, and the U.S. Public Health Service Commissioned Corps - Archer Daniels Midland - Assistant Deputy Minister ADOA - (a/i) Air Defence Operations Area ADP - Adenosine DiPhosphate - Army Doctrine Publication (UK, Canada, Australia) - Automatic/Automated Data Processing ADRG - Arc-second Raster Chart (ARC) Digitized Raster Graphics ADS - (a/i) Active Denial System - Astrophysics Data System - Attention Deficit Syndrome ADSR - Attack, Decay, Sustain, Release (sound envelope specification) ADT - Atlantic Daylight Time (UTC−3 hours) ADTB - Army Doctrine and Training Bulletin ADW - Air Defence Warning ae - Avestan language (ISO 639-1 code) AE- Armed Forces Africa/Canada/Europe/Middle East (postal symbol),United Arab Emirates (ISO 3166 digram; FIPS 10-4 country code), Artix Entertainment,American Eagle,A&E - (a/i) Arts & Entertainment Network, the original name for the U.S. TV channel now known as A&E Network AED - United Arab Emirates dirham (ISO 4217 currency code) AEDT - Australian Eastern Daylight Time AEF - American Expeditionary Force AEGIS - Airborne Early warning Ground environment Interface Segment (fake etymology) AESR - Aeronautical Equipment Service Record AEST - Australian Eastern Standard Time aet - After extra time (Football) AEW - Airborne Early Warning - Airborne Electronic Warfare af - Afrikaans language (ISO 639-1 code) aF - Attofarad AF- Afghanistan (FIPS 10-4 country code; ISO 3166 digram), Air Force,As f*ck AFA- U.S. Air Force Academy,Asociación del Fútbol Argentino (Spanish, "Argentine Football Association") AFAIC - As Far As I'm Concerned AFAICT - As Far As I Can Tell AFAIK - As Far As I Know AFAIR - As Far As I Remember/Recall AFAM-(i/a) Associazione Friulana di Astronomia e Meteorologia (Italian, "Friuli Association of Astronomy and Meteorology"), Department of African and Afro-American Studies, University of North Carolina at Chapel Hill — notable for its links to the school's academic-athletic scandal in the 2010s AFATDS - Advanced Field Artillery Tactical Data System AFC- American Football Conference,Asian Football Confederation AFCEA - Armed Forces Communications and Electronics Association AFDB - African Development Bank AFES - Automatic Fire Extinguishing System AFG - Afghanistan (ISO 3166 trigram) AFI- French Territory of the Afars and Issas (ISO 3166 trigram; obsolete since 1977), "Agencia Federal de Investigaciónes" (México) AFIS- Automated Fingerprint Identification System,American Forces Information Service AFIST - Abrams Full Crew Interactive Skills Trainer AFJ - April Fool's Joke AFK - Away From Keyboard (Internet chat abbreviation) AFL- American Federation of Labor,American Football League — either the 1960s league that merged into the National Football League, or one of several other leagues of American football,Arena Football League,Australian Football League,AFL-CIO - American Federation of Labor - Congress of Industrial Organizations AFLAC - American Family Life Assurance Company of Columbus AFM - Army Field Manual (UK; the U.S. more frequently uses just FM) - Atomic Force Microscope - Aviation Fleet Maintenance AFN - Afghani (ISO 4217 currency code) AFO - Association of Field Ornithologists AFOSR - U.S. Air Force Office of Scientific Research AFP- Agence France-Presse (French, "French Press Agency"),Australian Federal Police AFQT - Armed Forces Qualification Test afr - Afrikaans language (ISO 639-2 code) AFRC - Air Force Reserve Command AFRL - Air Force Research Laboratory AFROTC - Air Force Reserve Officer Training Corps AFRRI - (i, U.S.) Armed Forces Radiobiology Research Institute AFRTS - Armed Forces Radio and Television Service AFS- Active Front Steering,Air Facility Sub-System,Amniotic Fluid-derived Stem cell,AFS&A or AFSA - U.S. Air Force Studies and Analysis AFSC- U.S. Air Force Staff College (obsolete; replaced with JFSC),U.S. Air Force Systems Command AFSCN - U.S. Air Force Satellite Control Network AFSPC - Air Force Space Command AFT - American Farmland Trust AFV - armoured fighting vehicle AFWA- Air Force Weather Agency,Association of Fish and Wildlife Agencies,AG[edit] ag - Attogram Ag - Silver (Latin argentum) AG- air gunner,Aktiengesellschaft (German, "incorporated"), Algeria (FIPS 10-4 country code),Antigua and Barbuda (ISO 3166 digram),Assemblies of God AGA-(a/i) AB Gas-accumulator ("ah-gah", Swedish company),Advanced Graphics Architecture AGARD - Advisory Group for Aerospace Research and Development AGARDograph - Advanced Guidance for Alliance Research and Development publication AGASA - Akeno Giant Air Shower Array (cosmic ray detector) AGB - Internal Nintendo initialism (Advanced Game Boy) for Game Boy Advance AGC- Apollo Guidance Computer,Automatic Gain Control AGC - Adjutant General's Corps (British Army) AGDC - Australian Game Developers' Conference AGI - Auxiliary Group Intelligence AGL - Above Ground Level AGM - Annual General Meeting AGN - Active Galactic Nucleus AGO - Angola (ISO 3166 trigram) AGP - Accelerated Graphics Port AGRICOLA - Agriculture Online Access AGS - Alaska Ground Station (LandSat) AGTS - Advanced Gunnery Training System AGU - American Geophysical Union AGW - Autonomous Guided Weapon aH - Attohenry Ah - Ampere-hour AH - Attack Helicopter AHA - American Heart Association AHCPR - Agency for Health Care Policy and Research (obsolete; replaced with AHRQ) AHEC - Australian Health Ethics Committee AHPCRC - Army High Performance Computing Research Center AHQ - Air Headquarters AHRQ - Agency for Healthcare Research and Quality AHS - American Housing Survey AI- Air Interdiction,Amnesty International,Artificial Insemination,Artificial Intelligence, Anguilla (ISO 3166 digram) AIA- Aerospace Industries Association,American Institute of Architects, Anguilla (ISO 3166 trigram) AIAA - American Institute of Aeronautics and Astronautics AIC- African Independent Church,Animal Identification Coordinator AICD - Australian Institute of Company Directors AICMFP - And I Claim My Five Pounds AID - U.S. Agency for International Development AIDS - Acquired Immune Deficiency Syndrome AIM - many, including AOL Instant Messenger, Australian Institute of Management; see entry AIMP - Aurora Incremental Modernization Project AIPAC - American Israel Public Affairs Committee AIR - Aircraft Inventory Record AIRFA - American Indian Religious Freedom Act AIRS - (a/i) Aerometric Information Retrieval System (obsolete; replaced with AFS) AIS- Australian Institute of Sport,Automatic Identification System AISB - (British Society for the Study of) Artificial Intelligence and the Simulation of Behaviour aJ - Attojoule AJ - Azerbaijan (FIPS 10-4 country code) Ajax - Asynchronous JavaScript And XML AJD - Astronomical Julian day AJP - Allied Joint Publication AJPW - All Japan Pro Wrestling ak - Akan languages (ISO 639-1 code) aK - Attokelvin AK - Alaska (postal symbol) aka - Akan languages (ISO 639-2 code) AKA - Above knee amputation (orthopaedic usage) AKDT - Alaska Standard Daylight Saving Time (UTC−8 hours) AKST - Alaska Standard Time (UTC−9 hours) AKP - Adalet ve Kalkınma Partisi (Turkish, "Justice and Development Party") aL - Attolitre Al - Aluminium AL- Alabama (postal symbol),Albania (FIPS 10-4 country code; ISO 3166 digram), Anno Lucis (Latin, "Year of Light", in Masonic tradition, most often seen on plaques bearing the founding dates of buildings, in years AD and years AL) ALA - Åland Islands (ISO 3166 trigram) ALAP - As Long/Late As Possible ALARM - Air-Launched Anti-Radar Missile ALB - Albania (ISO 3166 trigram) ALD - Accounting Line Designator (nuclear weapon targeting) ALERT - Advanced Linked Extended Reconnaissance and Targeting - Attack and Launch Early Reporting to Theatre ALF- Africa Leadership Forum,Alien Life Form (cf. ALF (TV series)),Animal Liberation Front ALG - Algeria (IOC and FIFA trigram, but not ISO 3166) ALGOL - ALGOrithmic Language ALL - Albanian lek (ISO 4217 currency code) ALOA - Associated Locksmiths of America, Inc. ALOC- Air Lines Of Communication, Average Length of Calls ALPA - Air Line Pilots Association ALS - Amyotrophic Lateral Sclerosis - Automatic Landing System ALSHS - Abraham Low Self-Help Systems ALSP - Aggregate Level Simulation Protocol ALTE - Association of Language Testers in Europe ALTACS - Automated decision Logic Tactical Air Combat Simulation am- Amharic language (ISO 639-1 code),Attometre Am - Americium AM-many, including Amplitude Modulation and Ante Meridiem; see entry, Armenia (FIPS 10-4 country code; ISO 3166 digram) AM1 - Airman 1st class AMA- American Medical Association,Australian Medical Association AMAPS - Aircraft, Missile, Avionics Performance Simulation AMC- Adaptive modulation and coding (digital communications),U.S. Air Mobility Command,American Motors Corporation,American Movie Classics (TV network; now known simply by the initials),U.S. Army Materiel Command AMCB - U.S. Army/Marine Corps Board AMD- Advanced Micro Devices,Age-related Macular Degeneration, Armenian dram (ISO 4217 currency code) AMF - Afghan Military Force AMFOM - Advanced Missile Fly Out Model ("am-fomm") AMFR- Age-specific Marital Fertility Rate,Amplitude Modulation Following Response AMFRS- Advanced Multi-Function Radio Frequency System,Automatic Multisensor Feature-based Recognition System amh - Amharic language (ISO 639-2 code) AML - Acute Myeloid Leukaemia AMLCD - Active Matrix Liquid Crystal Display AMLO- Andrés Manuel López Obrador (Mexican politician),Anti-Money Laundering Office (Thailand government agency) AMO - Atlantic Multidecadal Oscillation AMOLED - Active-matrix organic light-emitting diode AMOS- Advanced MOrtar System,Air Force Maui Optical and Supercomputing observatory AMP- Adenosine MonoPhosphate,Automated Mission Planner AMRAAM - Advanced Medium-Range Air-to-Air Missile AMRDEC - U.S. Aviation & Missile Research, Development, & Engineering Center AMS- Agriculture Marketing Service,American Mathematical Society AMSAA - (i/a) U.S. Army Materiel Systems Analysis Activity AMSO - (i/a) U.S. Army Model and Simulation Office AMSU - Advanced Microwave Sounding Unit AMTE - UK Admiralty Marine Technology Establishment (1977-1984) an - Aragonese language (ISO 639-1 code) aN - Attonewton AN- Andorra (FIPS 10-4 country code),Netherlands Antilles (ISO 3166 digram) ANA- Administration for Native Americans,Afghan National Army,All Nippon Airways,Anti-Nuclear Anti-body, Australian National Airways,Australian Natives' Association ANC - African National Congress AND - Andorra (ISO 3166 trigram) ANFO - Ammonium nitrate/fuel oil (explosive) ANG- Air National Guard, Angola (IOC and FIFA trigram, but not ISO 3166), Netherlands Antillian guilder (ISO 4217 currency code) ANGLiCo - Air/Naval Gunfire Liaison Company ANL - Argonne National Laboratory ANM - Acoustic Noise Monitor ANOVA - ANalysis Of VAriance ANS - Applied and Natural Sciences ANSI - American National Standards Institute ANTM - America's Next Top Model ANT- Netherlands Antilles (ISO 3166 trigram),Antigua and Barbuda (IOC trigram, but not ISO 3166 or FIFA) ANTY - Acronyms, No Thank You ANWR - Arctic National Wildlife Refuge /ˈænwɑr/ ANZ - Australia and New Zealand Banking Group ANZAC - Australian and New Zealand Army Corps AO - Angola (FIPS 10-4 country code; ISO 3166 digram) - Approach Officer (submarine) - Area of Operations AOA - Air Officer in charge of Administration - Argonne National Laboratory - Angolan kwanza (ISO 4217 currency code) - Award Of Arms (heraldry) AOC - Air Operations Centre - Air Officer Commanding AOD - Adrenalin O.D. (punk rock band) AOI - Angle Of Incidence Arab Organization for Industrialization AOL - America OnLine AOR - Area of Responsibility AOSTH - Adventures of Sonic the Hedgehog AOTS - Attack of the Show! AOU - American Ornithologists' Union AP- Advanced Placement,Air Publication, Andhra Pradesh (Indian state code), Armed Forces Pacific (postal symbol), Associated Press,Auto Pilot APA - APB - All Points Bulletin (police jargon) APC- Armoured Personnel Carrier,Armour Piercing Capped (ammunition) APEC - Asia Pacific Economic Cooperation APCNR - Armour-Piercing, Composite Non-Rigid (ammunition) APCR - Armour-Piercing, Composite Rigid (ammunition) APDS - Armour-Piercing, Discarding-Sabot (ammunition) APEDS - AMSAA Performance Estimates Data System APEX - Applied Physics Express APFSDS - Armour-Piercing, Fin-Stabilised, Discarding Sabot (ammunition) APHA - American Public Health Association APHE - Armour-Piercing, High Explosive (ammunition) APHIS - Animal and Plant Health Inspection Service API - Application Programming Interface APL- A Programming Language,Acute Promyeloid Leukaemia,Anti-Personnel Landmine,Applied Physics Laboratory (Johns Hopkins University) APM - Advanced Power Management APOD - Aerial Port (Airport) Of Debarkation APOE - Aerial Port (Airport) Of Embarkation APOLLO - Apache Point Observatory Lunar Laser-ranging Operation APP - Allied Procedural Publication APR - Annual Percentage Rate APS- Advanced Photo System (cf. APS-C, an image sensor format based on the size of the original APS film frame),American Physical Society,Antiphospholipid Antibody Syndrome,AQ[edit] AQ- AdventureQuest, American Samoa (FIPS 10-4 territory code),Antarctica (ISO 3166 digram), Automatic qualifier, a term used by U.S. sports media from 1998 to 2013 to refer to the six conferences whose champions automatically entered the now-defunct Bowl Championship Series of college football AQIM - Al-Qaeda in the Islamic Maghreb ar - Arabic language (ISO 639-1 code) Ar - Argon AR - Argentina (FIPS 10-4 country code; ISO 3166 digram) - Arkansas (postal symbol) - Armour - Arunachal Pradesh (Indian state code) ara - Arabic language (ISO 639-2 code) ARAG - Advanced Research and Assessment Group ARB - Administrative Review Board ARBA - (a/i) Army Review Boards Agency ARC - Arc-second Raster Chart - Appalachian Regional Commission ARCA - Automobile Racing Club of America ARCENT - United States Army Central Command ARDA - Advanced Research and Development Activity (became DTO 2006) ARE - UK Admiralty Research Establishment (-1991) - United Arab Emirates (ISO 3166 trigram) ARF - ASEAN Regional Forum arg - Aragonese language (ISO 639-2 code) ARG - Argentina (ISO 3166 trigram) ARH - Armed Reconnaissance Helicopter ARI - Acute Respiratory Infection - U.S. Army Research Institute for the Behavioral and Social Sciences ARL - UK Admiralty Research Laboratory (1921-1977) - U.S. Army Research Laboratory - UIUC Aviation Research Laboratory ARM - Anti-Radiation Missile - Adjustable-rate mortgage - Armenia (ISO 3166 trigram) ARNet - Acquisition Reform Network ARP - Address Resolution Protocol - Applied Research Programme ARPA - Advanced Research Projects Agency ARRC - ACE Rapid Reaction Corps ARRF - Allied Rapid Reaction Force ARRL - American Radio Relay League ARS - Agricultural Research Service - Argentine peso (ISO 4217 currency code) ARSC - Arctic Region Supercomputing Center ARSPACE - U.S. Army Space Command ART - Adaptive Resonance Theory - Anti-Retroviral Therapy ARTCC - Air Route Traffic Control Center ARWG - Army Research Working Group ("are-wig") as - Adult swim - Assamese language (ISO 639-1 code) - Attosecond aS - Attosiemens As - Arsenic AS - American Samoa (postal symbol; ISO 3166 digram) - Australia (FIPS 10-4 country code) - Assam / Asom (Indian state code) AS - ActionScript ASA - AcetylSalicylic Acid - American Standards Association - Army Security Agency - Atlantic Southeast Airlines ASAP - As Soon As Possible ASARS - Advanced Synthetic Aperture Radar System - Airborne Search and Rescue System ASB - Associated Student Body - Alternative Service Book (Church of England) asbl - association sans but lucratif (French "Non-profit organisation") ASBO - Anti-Social Behaviour Order ASCAP - American Society of Composers, Authors, and Publishers ASCC - Army Service Component Commander - Automatic Sequence Controlled Calculator - Air Standardization Coordinating Committee ASCIET - All Services Combat Identification Evaluation Team ASCII - American Standard Code for Information Interchange ASD - (U.S.) Assistant Secretary of Defense - autism spectrum disorder ASDIC - Allied Submarine Detection Investigation Committee (Sonar) ASEAN - Association of Southeast Asian Nations ASFAR - Americans for a Society Free of Age Restrictions ASG - Area Support Group ASIC - Australian Securities and Investments Commission - Aviation Security Identification Card ASICS - Anima sana in corpore sano (Latin, "A sound mind in a sound body") (athletic shoe manufacturer) ASIO - Australian Security Intelligence Organisation - Audio stream input output ASIP - Advanced System Improvement Program - Army Stationing and Installation Plan - Application-specific instruction-set processor ASL - Above Sea Level - American Sign Language (also known as Ameslan) - "Age, Sex, Location?" (Internet slang) asm - Assamese language (ISO 639-2 code) ASM - Air-to-Surface Missile - American Samoa (ISO 3166 trigram) - American Society for Metals - American Society for Microbiology ASMB - American Society for Matrix Biology - Adult Swim Message Board ASME - American Society of Mechanical Engineers - American Society of Magazine ors ASMP - Air-Sol Moyenne Portée missile (French "Medium-range air to surface") - Asymmetric multiprocessing ASN - Associate of Science in Nursing ASOC - (a/i) Air Sovereignty Operations Centre - Air Support Operations Centre - Airport Security and Operations Centre - Antarctic and Southern Ocean Coalition - Atlanta Symphony Orchestra Chorus - Australian Standard Offence Classification ASP - Active Server Pages - American Society of Primatologists - Ammunition Supply Point - Application Service Provider (cf internet service provider) - Astronomical Society of the Pacific - Association of Surfing Professionals ASPI - Australian Strategic Policy Institute ASR - Alkali-silica reaction - Anti Slip Regulation ASRAAM - Advanced Short-Range Air-to-Air Missile ASSC - Association for the Scientific Study of Consciousness AST - Atlantic Standard Time (UTC−4 hours) ASTIA - Armed Services Technical Information Agency ASTM - American Society for Testing and Materials ASTREA - Aerial Support To Regional Enforcement Agencies (sheriff's air support unit) ASUW - AntiSUrface Warfare ASVAB - Armed Services Vocational Aptitude Battery(taken by juniors in high school in the USA) ASVEL - Association Sportive Villeurbanne Éveil Lyonnais (Association Sportive is French for "Sporting Association"; the club was founded through the merger of AS Villeurbanne and Éveil Lyonnais) ASW - AntiSubmarine Warfare ASWORG - (U.S.) AntiSubmarine Warfare Operations Research Group ASX - Advanced Stream Redirector - Australian Securities Exchange aT - Attotesla At - Astatine AT - Anti-Tank - Ashmore and Cartier Islands (FIPS 10-4 territory code) - Austria (ISO 3166 digram) - Advanced Technology (IBM Personal Computer/AT) ATA - Advanced Technology Attachment (IBM Personal Computer) - Afghan Transitional Authority - Allen Telescope Array - Antarctica (ISO 3166 trigram) ATAC - Air Transportable Acoustic Communications ATACMS - Army TACtical Missile System ATAPI - Advanced Technology Attachment Packet Interface ATAS - Air-To-Air Stinger (missile) ATAT - Aiken Tactical Airsoft Team / Star Wars vehicle ATB - Active Time Battle - British Antarctic Territory (ISO 3166 trigram; merged with AQ in 1979) ATC - Air Traffic Control - Air Training Corps - U.S. Air Transport Command (1942-1948)- Athletic Trainer, Certified (www.nata.org) ATCCIS - Army Tactical Command and Control Information System ATESS - Aerospace and Telecommunications Engineering Support Squadron ATF - French Southern Territories (ISO 3166 trigram) - (U.S.) Bureau of Alcohol, Tobacco, Firearms and Explosives (from its previous name, which did not include "Explosives") ATG - Antigua and Barbuda (ISO 3166 and FIFA trigram) ATGM - Anti-Tank Guided Missile ATGW - Anti-Tank Guided Weapon ATI - Allied Telesyn International, Inc. - Array Technologies Incorporated. (ATI Technologies) Atisbo - a Local Government Area in Nigeria named for constituent communities (Ago-Are, Tede, Irawo, Sabe, Baasi, Ofiki and Owo) ATK - Attack ATL - Atlanta, Georgia, the largest city and capital of Georgia ATLAS - All-Terrain Lifter Army System - Assessment Tool for LAnd Systems ATM - Automated Teller Machine - Asynchronous Transfer Mode - At The Moment ATN - Dronning Maud Land (ISO 3166 trigram; merged with AQ in 1983) ATO - Air Tasking Order - Australian Taxation Office ATP - Adenosine TriPhosphate - Allied Tactical Publication - Ammunition Transfer Point ATSD - (U.S.) Assistant Secretary of Defense ATSDR - Agency for Toxic Substances and Disease Registry ATV - All-Terrain Vehicle ATWA - Air, Trees, Water, Animals Au - Gold (Latin Aurum) AU - African Union (was OAU before 2000) - American University - Astronomical Unit - Australia (ISO 3166 digram) - Austria (FIPS 10-4 country code) AUC - Ab Urbe Condita / Anno Urbis Conditae (Latin "from the founding of the city" / "in the year since the founding of the city") (of Rome) - Area Under the Curve (concentration time curve; medicine) AUD - Australian dollar (ISO 4217 currency code) AUS - Australia (ISO 3166 trigram) AUSCANNZUKUS - Australia, Canada, New Zealand, United Kingdom, United States (security designation) Auslan - Australian Sign Language AUT - Austria (ISO 3166 trigram) AUTL - Army Universal Task List av - Avar language (ISO 639-1 code) aV - Attovolt Av - Aperture value (photographic mode) AV- Anguilla (FIPS 10-4 territory code), Audio-Visual, Aviation ava - Avar language (ISO 639-2 code) AVA - American Viticultural Area AVB - Audio Video Bridging AVDLR - Aviation Depot Level Repair ave - Avestan language (ISO 639-2 code) AVGP - Armoured Vehicle, General Purpose AVI - Audio Video Interleave AVIM - Aviation Intermediate Maintenance AVLB - Armoured Vehicle Launched Body AVM- Air Vice-Marshal, Arteriovenous malformation AVO - Apprehended Violence Order AVP - Arubaanse Volkspartij AVP - Association of Volleyball Professionals AVRE - Armoured Vehicle Royal Engineers AVTB- Armoured Vehicle Test Bed, Aviation Test Bed AVUM - Aviation Unit Maintenance AVVO - Acute Vaginal Venereal Outbreak aW - Attowatt AW - Aruba (ISO 3166 digram) AWA - American Wrestling Association AWACS - Airborne Warning And Control System AWC - Air Warfare Centre AWD - many, including All Wheel Drive; see entry AWE - (i/a) Advanced Warfighting Experiment AWG - Aruban guilder (ISO 4217 currency code) AWOL - Absent Without Official Leave / Absent WithOut Leave (military jargon) AWP - Awaiting Parts (SM&R code) AWSIM - Air Warfare SIMulation AWST - Australian Western Standard Time AWW - Above Water Warfare AX - Åland Islands (ISO 3166 digram) AXP - Ambulance eXchange Point ay - Aymara language (ISO 639-1 code) AY - Antarctica (FIPS 10-4 territory code) AYBABTU - All Your Base Are Belong To Us aym - Aymara language (ISO 639-2 code) AYU - As Yet Unknown az - Azerbaijani language (ISO 639-1 code) AZ- Arizona (postal symbol),Azerbaijan (ISO 3166 digram), Alkmaar Zaanstreek (Dutch football club) aze - Azerbaijani language (ISO 639-2 code) AZE - Azerbaijan (ISO 3166 trigram) AZN - Azerbaijani manat (ISO 4217 currency code) AZUR - Actions en zone urbaine (French, Urban Operations) BAR- Barbados (IOC trigram, but not FIFA or ISO 3166), British American Racing,Browning Automatic Rifle,Buy-American Restrictions,BARD - Binational Agricultural Research and Development fund (between the US and Israel),BARDA - Biomedical Advanced Research and Development Agency,BART - Bay Area Rapid Transit,BAS - Battalion Aid Station,BASE - Building, Antenna, Span, Earth (parachute from),BASF - Badische Anilin und Soda Fabrik (Baden Aniline and Soda Factory, a German chemicals company),BASIC - Beginner's All-purpose Symbolic Instruction Code (acronym was added later, originally it was simply Basic),BAT - (a/i) Basic Aid Training,BATF - U.S. Bureau of Alcohol, Tobacco, and Firearms,BATS - Behavior Analysis Training System - Bradley Advanced Training System,BATTeRS - Bisei Asteroid Tracking Telescope for Rapid Survey,BB[edit] BB- Barbados (ISO 3166 digram; FIPS 10-4 country code), Boys' Brigade (Christian youth organization),Brigitte Bardot (actress),Bumblebee BBB- Better Business Bureau,Blood-brain barrier BBC- Breeding Bird Census,British Broadcasting Corporation, Bumper to Back of Cab (trucking measurement) BBD- Barbadian dollar (ISO 4217 currency code), Bowel Bladder Dysfunction BBL- Be Back Later,Bird Banding Laboratory,British Basketball League,BBN - Bolt, Beranek and Newman,BBQ - Barbecue[1] BBS- Breeding Bird Survey (North America),Brigade/Battalion Battle Simulation,Bulletin Board System,BBSRC - U.K. Biotechnology and Biological Sciences Research Council,BBVA - Banco Bilbao Vizcaya Argentaria (Spanish bank) BBYO - B'nai B'rith Youth Organization BC- Before Christ,Blind Copy (in emailers),Boston College, Botswana (FIPS 10-4 country code; from Bechuanaland),British Columbia (postal symbol) BCA- Bachelor of Computer Application,Black Coaches & Administrators,BCC - Blind Carbon Copy BCCI- Bank of Credit and Commerce International,Board of Control for Cricket in India,BCD - Binary-Coded Decimal BCE- Banque centrale européenne (French, "European Central Bank"),Battlefield Co-ordination Element,BC Electric, a former name for BC Hydro,Before Common Era,BCER - British Columbia Electric Railway,BCFG - Patchy Fog (METAR Code),BCIS (fratricide avoidance system) - Battlefield Combat Identification System,BCLL - Bibliography of Celtic Latin Literature,BCPL - Basic Combined Programming Language (progenitor of C) BCS- Bachelor of Computer Science,Bardeen, Cooper, and Schrieffer superconduction theory,Bowl Championship Series (US college football),BCT - Brigade Combat Team,BD[edit],BD - Bangladesh (ISO 3166 digram) - Bermuda (FIPS 10-4 territory code),BDA - British Dental Association,BDD - Body Dysmorphic Disorder - British Defence Doctrine,Bde - Brigade,BDFL - Benevolent Dictator For Life,BDI - Burundi (ISO 3166 trigram),BDNF - Brain-Derived Neurotrophic Factor,BDO - Battle Dress Overgarment,BDOS - Basic Disk Operating System; part of CP/M,BDS -  - Bachelor of Dental Surgery,BDSM - Bondage and Discipline, Domination and Submission, Sadism and Masochism,BDT - Bangladeshi taka (ISO 4217 currency code) - Bureau de développement des télécommunications (Telecommunication Development Bureau, became ITU-D),BDTA - British Dental Trade Association,BDU - Battle-Dress Uniform,BE[edit],be - Belarusian language (ISO 639-1 code),Be - Beryllium,BE - Belgium (FIPS 10-4 country code; ISO 3166 digram) BEA- Banque extérieure d'Algérie,British European Airways (ancestor of British Airways),British Electricity Authority,bel - Belarusian language (ISO 639-2 code),BEL - Belgium (ISO 3166 trigram),BEM - British Empire Medal - Bug-Eyed Monster,ben - Bengali language (ISO 639-2 code),BEN - Benin (ISO 3166 trigram),BEO - Banquet Event Order,BERC - Business Environmental Resource Center,BER - Bit Error Rate BES- Budget Estimate Submission, Caribbean Netherlands (ISO 3166 trigram; from the entity's alternate name of Bonaire, Sint Eustatius and Saba),BESS - Business, Education, and Social Sciences,BET - (a/i) Black Entertainment Television,BETS - Bradley Embedded Training System,BF[edit],BF - The Bahamas (FIPS 10-4 country code) - Burkina Faso (ISO 3166 digram),b/f - before,BFA - Burkina Faso (ISO 3166 trigram),BfArM - Bundesinstitut für Arzneimittel und Medizinprodukte, German governmental institute for drugs and medical devices,BFI - British Film Institute,BFR - Biennial flight review,BFR - Brominated Flame Retardant,BFSA - Blue Force Situation Awareness,BFT - Blue Force Tracking,BFF - Best Friends Forever,BFS - Belfast International Airport (IATA airport code),BFX - Bioinformatics,BG[edit],bg - Bulgarian language (ISO 639-1 code),BG - Bangladesh (FIPS 10-4 country code) - Battle Group - Body Guard - Brigadier General - Bulgaria (ISO 3166 digram),BGA - Ball Grid Array - Brandy and Ginger Ale (alcoholic beverage),BGD - Bangladesh (ISO 3166 trigram),BGN - U.S. Board on Geographic Names - Bulgarian lev (ISO 4217 currency code),BGR - Bulgaria (ISO 3166 trigram),BGS - Bristol Grammar School - British Geographical Survey,BGWG - Battle Group Wargame (military simulation; "big wig"),BH[edit],bh - Bihari languages (ISO 639-1 code),Bh - Bohrium BH- Bahrain (ISO 3166 digram),Belize (FIPS 10-4 country code),BHD - Bahraini dinar (ISO 4217 currency code),BHR - Bahrain (ISO 3166 trigram) BHS- British Home Stores, The Bahamas (ISO 3166 trigram),BI[edit],bi - Bislami language (ISO 639-1 code),Bi - Bismuth,BI - Burundi (ISO 3166 digram),BIAP - Baghdad International Airport - Biafran pound,BICS - (i/a) Battlefield Information and Communication System,BID - bis in die (Latin, "twice a day"),BIDST - British Institute of Dental and Surgical Technologists,BIF - Burundian franc (ISO 4217 currency code),bih - Bihari languages (ISO 639-2 code),BIH - Bosnia and Herzegovina (ISO 3166 trigram),BIOS - Basic Input/Output System - British Institute of Organ Studies,BIP - Battlefield Interoperability Programme (ancestor of MIP) - Broadcast incremental power algorithm,bis - Bislami language (ISO 639-2 code),BISEPS - Battlefield Identification System Environment Performance Simulation,BIST - Built-In Self-Test,BIT - Bilateral Investment Treaty - Built-In Test,BITE - Built-In Test Equipment,BJ[edit],BJ - Benin (ISO 3166 digram) - Blowjob (oral sex),BJJ - Brazilian Jiu-Jitsu,BJP - Bharatiya Janata Party (Indian People's Party),BJT - Bipolar Junction Transistor,BK[edit],Bk - Berkelium,BK - Burger King - Bankrupt (most often seen as "gone BK") - Bosnia and Herzegovina (FIPS 10-4 country code),BKN - Broken Sky (METAR Code),BL[edit],BL - Bolivia (FIPS 10-4 country code) - British Leyland,BLCSE - Battle Laboratory Constructive Simulation Environment,BLDU - Blowing Dust (METAR Code),BLEVE - Boiling Liquid Expanding Vapour Explosion ("blevy"),BLOB - Binary Large OBject,BLR - Belarus (ISO 3166 trigram),BLSA - Blowing Sand (METAR Code),BLRSI - Battle Lab Reconfigurable Simulator (U.S. Army),BLSN - Blowing Snow (METAR Code),BLT - Bacon Lettuce Tomato (sandwich),BLUFOR - Blue Force (military),BLUI - (a/i) Body Language User Interface ("blooie"),BLZ - Belize (ISO 3166 trigram),BM[edit],bm - Bambara language (ISO 639-1 code),BM - Battle Management - Bermuda (ISO 3166 digram) - Myanmar (FIPS 10-4 country code; from Burma),BMA - British Medical Association,BMCC - Borough of Manhattan Community College,BMD - Ballistic Missile Defence - Bermudian dollar (ISO 4217 currency code) - Boyevaya Mashina Desanta (Russian Боевая Машина Десанта, "Combat Vehicle Airborne") †[2] - British Military Doctrine,BMDG - British Military Doctrine Group,BMDO - (U.S.) Ballistic Missile Defense Organization ("bim-do"),BME - Biomedical Engineering - Black and Minority Ethnic group - Body Modification E-zine,BMEWS - (a/i) Ballistic Missile Early Warning System ("bee-mews"),BMI - Body Mass Index - Broadcast Music Incorporated,BMG - Bertelsmann Music Group,BML - Battle Management Language,BMNT - Begin Morning Nautical Twilight,BMP - Boyevaya Mashina Pekhoti (Russian Боевая Машина Пехоты, "Combat Vehicle for the Infantry") †[2],BMR - Basal metabolic rate - Bronirovannaya Mashina Razminirovaniya (Russian Бронированная Машина Разминирования, "Armoured Vehicle for Mine-Clearing") †[2],BMU - Bermuda (ISO 3166 trigram),BMW - Bayerische Motoren Werke (German, "Bavarian Motor Works"),BMX - Bicycle/Bike Moto (r) Cross,BN[edit],bn - Bengali language (ISO 639-1 code),Bn - Battalion,BN - Brunei (ISO 3166 digram; FIPS 10-4 country code),BND - Brunei dollar (ISO 4217 currency code),BnF - Bibliothèque nationale de France (French, "National Library of France") BNF- Backus-Naur Form (computing),British National Formulary,BNICE - Biological, Nuclear, Incendiary, Chemical, and Explosive Agents BNP- British National Party,Banque Nationale de Paris, a predecessor to today's BNP Paribas,BNS - Bank of Nova Scotia,BNSF - (i/s) Burlington Northern Santa Fe (also AAR reporting mark),BO[edit],bo - Tibetan language (ISO 639-1 code) BO- Back Orifice, Belarus (FIPS 10-4 country code), Biarritz Olympique (French rugby union club), Bolivia (ISO 3166 digram), Body odor,BO2k - Back Orifice 2000,BOAC - British Overseas Airways Corporation (predecessor of British Airways) BoAML - Bank of America Merrill Lynch BOC- British Orthodontic Society,British Oxygen Company,BÖC - Blue Öyster Cult,bod - Tibetan language (ISO 639-2 code),BOD - Biochemical Oxygen Demand,BODMAS - Brackets, Orders, Division, Multiplication, Addition, Subtraction,BOFH - Bastard Operator From Hell,BOGA - Bend Over and Grab Ankles,BOGOF - Buy One, Get One Free BOGs - Bunch of Guys BOI- Balance Of Investment,Basis Of Issue,BOL - Bolivia (ISO 3166 trigram) BOM- Base Object Model,Bill Of Materials,Block of the Month quilting term,Business opportunity meeting,BOP - Balance of Payments,BOPB - Biarritz Olympique Pays Basque (the complete name of the rugby club),BOPD - Barrel of Oil Per Day BOQ- Bill Of Quotations,Bachelor Officers' Quarters,Bank Of Queensland,bos - Bosnian language (ISO 639-2 code),BOS - Battlefield Operating System BOT- Balance of Trade, Botswana (IOC and FIFA trigram, but not ISO 3166), Build Operate Transfer, Bank of Thailand,BP[edit] BP- Battle Position,British Petroleum (today, BP does not officially stand for anything), Solomon Islands (FIPS 10-4 country code; from British Protectorate of the Solomon Islands),Bp - Bishop,BPD - Bipolar Personality Disorder,BPM - Beats Per Minute,BPMo - Business Process Mobility BPV- Battlefield Planning Visualization,Bovine papillomavirus,BQ[edit] BQ- British Antarctic Territory (former ISO 3166 digram; merged with AQ in 1979),Caribbean Netherlands (current ISO 3166 digram; based on the entity's alternate name of Bonaire, Sint Eustatius and Saba),Navassa Island (FIPS 10-4 territory code),BR[edit],br - Breton language (ISO 639-1 code),Br - Bromine BR- Brazil (ISO 3166 digram; FIPS 10-4 country code) - Bihar (Indian state code), British Rail,Break Ranks (marching band term),BRA - Brazil (ISO 3166 trigram),BRAG - Bicycle Ride Across Georgia,BRASS - Breathe, Relax, Aim, Sight, Squeeze (Acronym for using a rifle) BRB- Barbados (ISO 3166 trigram), "Be Right Back" (Internet chat abbreviation),BRDM - Boyevaya Razvedyvatelnaya Dosornaya Mashina (Russian Боевая Разведывательная Дозорная Машина, "Combat Reconnaissance Patrol Vehicle") †[2],bre - Breton language (ISO 639-2 code),BRFSS - Behavioral Risk Factor Surveillance System ("burf-us", a CDC health survey covering the U.S. and its territories),BRI - Bathroom ers Institute (publishers of series of "Uncle John's Bathroom ers" books),BRIC - Brazil, Russia, India and China,BRICS - Brazil, Russia, India, China and South Africa,BRIMS - Behavior Representation In Modeling and Simulation (conference),BRL - Brazilian real (ISO 4217 currency code),BRM - Boyevaya Razvedyvatelnaya Mashina (Russian Боевая Разведывательная Машина, "Combat Reconnaissance Vehicle") †[2] BRN- Bahrain (IOC trigram, but not FIFA or ISO 3166), Brunei (ISO 3166 trigram),BRSB - Battlefield Reasoning System Brianna,BRU - Brunei (IOC and FIFA trigram, but not ISO 3166),BS[edit],bs - Bosnian language (ISO 639-1 code) BS- The Bahamas (ISO 3166 digram),Bassas da India (FIPS 10-4 territory code),Bachelor of Science degree,British subject Bullshit- BSA- Birmingham Small Arms (motorcycles company),Boy Scouts of America,Brigade Support Area BSatCoP - Benjamin Sniddlegrass and the Cauldron of Penguins BSD- Bahamian dollar (ISO 4217 currency code), Berkeley Software Distribution (distinct from BSoD) BSE - Bovine Spongiform Encephalopathy, better known as mad cow disease BSN-Baloncesto Superior Nacional (Spanish, "National Superior Basketball"; top Puerto Rican league),Bank Simpanan Nasional (Malay, "National Savings Bank"; government-owned Malaysian bank) BSNL-Bharat Sanchar Nigam Limited, Bachelor of Science in Nursing,BSoD - Blue Screen of Death (distinct from BSD) BSP- Between-Show Promotion,Binary Space Partitioning,Board Support Package,British Standard Pipe (screw thread), Business-sponsored,Bone sialoprotein BST- Binary search tree,Blended Sales Tax, Bovine somatotropin, British Summer Time,BSW - British Standard Whitworth (screw thread),BSX - Bendigo Stock Exchange,BT[edit] Bt- Baronet,Bacillus thuringiensis BT- Baal teshuva (Hebrew, "master of repentance") - used to describe a Jew who adopts Orthodox Judaism as an adult,Bathythermograph, Bhutan (FIPS 10-4 country code; ISO 3166 digram), BitTorrent,British Telecom, the former name of the company now known as BT Group,BTDT - Been There, Done That,Bti - Bacillus thuringiensis israelensis,BTID - Battlefield Target Identification Device,BTIS - Battlefield Target Identification System BTN- Bhutan (ISO 3166 trigram),Bhutanese ngultrum (ISO 4217 currency code),BTO - Built To Order,BTP - British Transport Police,BTR - Bronetransporter (БТР = Бронетранспортер "(Heavy) Armoured (Personnel) Transporter") †[2],BTU - British Thermal Unit,BTW - By The Way,BU[edit],BU - ,Bulgaria (FIPS 10-4 country code) -,Burma (ISO 3166 digram; obsolete since 1989),BUAV - British Union for the Abolition of Vivisection,BUG-E - Battlefield Universal Gateway Equipment ("buggy"),bul - ,Bulgarian language (ISO 639-2 code),BUL - ,Bulgaria (IOC and FIFA trigram, but not ISO 3166),BUNO or BuNo - Bureau Number (aircraft serial number),BUR - ,Burma (ISO 3166 trigram; obsolete since 1989),BV[edit],BV - ,Background Vocals -,Battlefield Visualization - ,Bouvet Island (ISO 3166 digram; FIPS 10-4 territory code),BVD - Bradley, Voorhees & Day (underwear manufacturer),BVR - Beyond Visual Range,BVT - Bouvet Island (ISO 3166 trigram),BW[edit],B&W - Babcock & Wilcox - Black and White - Bowers & Wilkins,BW - Bring Wedges (ISO digram),BW - Botswana (ISO 3166 digram),BWA - Botswana (ISO 3166 trigram),BWARS - Bees, Wasps & Ants Recording Society,BWC - Biological and Toxin Weapons Convention,BWP - Botswanian pula (ISO 4217 currency code),BWR - Boiling-Water Reactor,BX[edit],BX - Base eXchange - ,BY[edit],BY - ,Burundi (FIPS 10-4 country code) -,Belarus (ISO 3166 digram),BYOB - Bring Your Own Bottle (or "beer", "beverage", or "booze") (multiple, but similar, meanings),BYOC - Bring Your Own Computer (play on BYOB),BYOF - Bring Your Own Flask,BYR - Belarusian ruble (ISO 4217 currency code),BYS - ,Byelorussian Soviet Socialist Republic (ISO 3166 trigram; obsolete since 1992),BYU - Brigham Young University,BZ[edit],BZ - Belize (ISO 3166 digram),BZD - Belize dollar (ISO 4217 currency code),BZP - Benzylpiperazine,References[edit],^ See references and discussion under Barbecue and :List of acronyms and initialisms: B. Examples of use: [1], [2], [3], [4],^ a b c d e f http://www.milparade.com/Soderzhaniye.pdf,^ http://www.tbkarunia.com,v,t,e,List of acronyms,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,Retrieved from "https://en.wikipedia.org/w/index.php?title=List_of_acronyms:_B&oldid=693551285",Categories: Lists of abbreviations,Navigation menu,Personal tools,Not logged inContributionsCreate accountLog in,Namespaces,,,,,,,View history, c - Centi C - Carbon - Coulomb - One Hundred (in Roman numerals) c2c - the British rail company formerly known as LTS Rail C2C - Consumer-To-Consumer electronic commerce - Cam-To-Cam internet chat ca - Catalan language (ISO 639-1 code) Ca - Calcium CA- California (postal symbol),Canada (FIPS 10-4 country code; ISO 3166 digram),Catalonia, Civil Affairs,Close Armour,Cocaine Anonymous,Computer Associates,Counter-Air,Cricket Australia CAA- Canadian Automobile Association,(NORAD) Center for Aerospace Analysis,(U.S.) Center for Army Analysis,(U.S.) Clean Air Act,(U.S. Army) Concepts Analysis Agency,Civil Aviation Authority,Colonial Athletic Association CAAT- or Campaign Against Arms Trade,Center for Alternatives to Animal Testing CAC- California Association of Criminalists,Chronic Asymptomatic [Disease] Carrier,CACM Central American Common Market CACM - Communications of the ACM CAD- Canadian dollar (ISO 4217 currency code), Computer-Aided Design,Computer-Aided Dispatch,Cpplint Anxiety Disorder - Condition suffered by software developers who worry about whether they've left any whitespace on the end of a line CADCAM - Computer-Aided Design/Computer-Aided Manufacturing CADPAT - CAnadian Disruptive PATtern CADMID - Concept, Assessment, Demonstration, Manufacture, In service, Disposal (life cycle mnemonic) CAE- Canadian Aviation Electronics (originally),Certificate in Advanced English CAEn - (i/a) Close Action Engagement (constructive simulation) CAF- Central African Republic (ISO 3166 trigram), Confederation of African Football (or French Confédération Africaine de Football) CAFAD - Combined Arms For Air Defence CAFDE- Canadian Association of Film Distributors and Exporters,Computer Aided Federation Development Environment CAFE - Corporate Average Fuel Economy standard CAI - Computer Assisted Instruction CAIR - Council on American-Islamic Relations CALABARZON - A region in the Philippines: CAvite, LAguna, BAtangas, Rizal, queZON CALL - (U.S.) Center for Army Lessons Learned CALM - Communications, Air-interface, Long and Medium range CalPERS - California Public Employees' Retirement System Caltrans - California Department of Transpotation CAM- Chemical Agent Monitor,Complementary and alternative medicine,Computer-Aided Manufacturing,Crassulacean acid metabolism (type of photosynthesis) CAMRA - CAMpaign for Real Ale CAN - Canada (ISO 3166 trigram) CANA - Convulsive Antidote, Nerve Agent CANDU - CANada Deuterium Uranium (nuclear reactor design) Canola - Canadian oil, low acid (referring to a specific cultivar of rapeseed bred to have a low erucic acid content) CAP- Combat Air Patrol,Civil Air Patrol,Common [Operating/Operational] Air Picture,Crisis Action Procedures,Common Agricultural Policy (European Union) CAPES- CAPability Evaluation System, Combined Arms Planning and Execution System CARE- Citizens Association for Racial Equality (former New Zealand organisation), Community database on Accidents on the Roads in Europe, Cooperative for Aid and Relief Everywhere (originally Cooperative for American Remittances to Europe) CARMONETTE - Computerized Monte Carlo Simulation CARP - Computed Air Release Point CART - Championship Auto Racing Teams (now defunct) CAS- Chemical Abstracts Service,Chief of the Air Staff,Close Air Support CASA - Civil Aviation Safety Authority CASE- Cellular ammunition storage equipment,Computer-Aided Software Engineering CASS - Command Activated Sonobuoy System CASTFOREM - Combined Arms and Support Task FORce Evaluation Model CASTOR - Canadian Automatic Small Telescopes for Orbital Research cat - Catalan language (ISO 639-2 code) CAT- Community Acceptance Testing,Computer-Assisted (or Axial) Tomography CATK - Counterattack CATS - Computer Active Technology Suspension CATT - (a/i) Combined Arms Tactical Trainer CAV - Cavalry CAVOK - Ceiling And Visibility OK ("Kav-okay") CAW - Canadian Auto Workers (trade union) CB- Citizens' Band radio, Cambodia (FIPS 10-4 country code) CBASSE - Commission on Behavioral And Social Sciences and Education ("sea bass") CBC- Canadian Broadcasting Corporation,Christmas Bird Count,Cipher-Block Chaining,Cornering Brake Control CBE- Commander of the Order of the British Empire,Cab Beside Engine (see truck) CBF - Confederação Brasileira de Futebol (Portuguese, "Brazilian Football Confederation") CBGB - Country, Blue Grass, and Blues (former New York City nightclub) CBLA - Comparative bullet lead analysis CBN - CardsApp Brand Number CBM - many, including Canadian Baptist Ministries and Commodore Business Machines; see entry CBML - Coalition Battle Management Language CBOL - Consortium for the Barcode of Life CBOT - Chicago Board of Trade CBR - Case-Based Reasoning CBRN - Chemical, Biological, Radiological, or Nuclear (weapon or event) CBRNE - Chemical, Biological, Radiological, Nuclear or [high-yield] Explosive (weapon or event) CBS- Columbia Broadcasting System,Corps Battle Simulation CBT- Cognitive Behaviour Therapy, Combat CBUS - Columbus, Ohio CC - many, including carbon copy; see entry CCA - Counter Command Activity CCC- Canterbury Clothing Company,Civilian Conservation Corps (U.S., 1930s and 1940s),Corpus Christi College, Oxford CCCP- Central Committee of the Communist Party,Cyrillic for SSSR (Soyuz Sovetskikh Sotsialisticheskikh Respublik, Russian Союз Советских Социалистических Республик, Union of Soviet Socialist Republics) CCD- Charge-Coupled Device,Confraternity of Christian Doctrine (Catechism) CCF - Cartoon Cartoon Fridays CCG- Canadian Coast Guard,Collectible Card Game CCGC- Canadian Coast Guard Cutter,Canadian Coast Guard College CCGH - Canadian Coast Guard Hovercraft CCGS- Canadian Coast Guard Ship,Christ Church Grammar School CCH - Computer-Controlled Hostile CCIF - Comité consultatif international des communications téléphoniques à grande distance (French for International Telephone Consultative Committee, merged with the CCIT in 1956 to form the CCITT) CCII- Command and Control Information Infrastructure,Community Capital Investment Initiative CCIR- Comité consultatif international pour la radio (French for Consultative Committee on International Radio, became the ITU Radiocommunication Sector, ITU-R, in 1992),Commander's Critical Information Requirements CCIT - Comité consultatif international télégraphique (French for International Telegraph Consultative Committee, merged with the CCIF in 1956 to form the CCITT) CCITT - Comité consultatif international téléphonique et télégraphique (French for International Telegraph and Telephone Consultative Committee, became the ITU Telecommunication Standardization Sector, ITU-T, in 1992) CCK- Cholecystokinin, Cocos (Keeling) Islands (ISO 3166 trigram) CCM- Canada Cycle & Motor Co. Ltd. (now split into two separate companies bearing the CCM name, one manufacturing bicycles and the other ice hockey equipment),Contemporary Christian music CCOC- Canadian Children's Opera Chorus,Crosley Car Owners Club CCOP - Coalition Common Operating/Operational Picture CCP- Casualty Collection Point,Communications Checkpoint,Contingency Communications Package CCPA - Consumer Credit Protection Act CCR - Creedence Clearwater Revival CCRAp - Canadian Conservative Reform Alliance party CCRP - Command and Control Research Program CCRTS - Command and Control Research and Technology Symposium CCSCS - Coordinadora de Centrales Sindicales del Cono Sur CCSCS - Consultative Committee for Space Data Systems CCSIL - Command and Control Simulation Interface Language ("cecil") CCSK - Cyclic Code Shift Keying CCT - Current Commitments Team CCTT - Close Combat Tactical Trainer cd - Candela Cd - Cadmium CD - many, including Compact Disc; see entry CD1 - Cluster of Differentiation 1 (a small gene family) CDA - UK Centre for Defence Analysis CDC- Centers for Disease Control and Prevention (originally (U.S.) Communicable Disease Center),Control Data Corporation,Cult of the Dead Cow CDD - Capabilities Development Document CDE - Chemical Defence Equipment CDEC - U.S. Combat Development Experimentation Center CDF- California Department of Forestry [and Fire Protection],Common Data Format, Democratic Republic of Congo franc congolais (ISO 4217 currency code) CDIAC - Carbon Dioxide Information Analysis Center ("see-dee-ack") CDipAF - Certified Diploma in Accounting and Finance CDL - Commercial driver's license CDM- Clean Development Mechanism (Kyoto protocol),Cold Dark Matter (astronomy) CDMA - Code Division Multiple Access CDMSII - Cryogenic Dark Matter Search II Cdr - Commander CDS- Chief of the Defence Staff,Credit default swap Cdt - Commandant CDT - Central Daylight Time (UTC−5 hours) ce - Chechen language (ISO 639-1 code) Ce - Cerium CE - many, including Christian/Common Era (cf. AD); see entry CEA - Campaign Effectiveness Analysis CECOM - U.S. Army Communications and Electronics Command CEDEX - Courrier d'entreprise à distribution exceptionnelle (French, "Company Mail with Exceptional Distribution"; "exceptional" refers to the volume of mail) CEGEP - Collège d'enseignement général et professionnel (French, "College of General and Vocational Education") CEI - Competitive Enterprise Institute CENTCOM - United States Central Command CENTO - Central Treaty Organization (Baghdad Pact) CENZUB - Centre d'entraînement aux actions en zone urbaine (French, "Urban Operations Training Centre") CEO - Chief Executive Officer CEP - Circular Error Probable CEPT - (a/i) Conférence européenne des administrations des postes et des télécommunications (French, "European Conference of Postal and Telecommunications Administrations") CERCLA - U.S. Comprehensive Environmental Response, Compensation, and Liability Act (Superfund) CERDEC - U.S. Communications-Electronics Research, Development and Engineering Center CERGA - Centre de recherches en géodynamique et astrométrie (French, "Astrometry and Geodynamics Research Centre") CERN - Centre européen pour la recherche nucléaire (French, "European Organization for Nuclear Research") CERT - Computer Emergency Response Team ces - Czech language (ISO 639-2 code) CESS - Centre for Earth Science Studies (India) CEV- Combat Engineer Vehicle,Confédération européenne de volleyball (French, "European Volleyball Confederation"),Crew Exploration Vehicle CEWC - (a/i) Council for Education in World Citizenship Cf - Californium CF- Canadian Forces, Central African Republic (ISO 3166 digram),Republic of the Congo (FIPS 10-4 country code) CFA- Cat Fanciers' Association,Chartered Financial Analyst,Colour Filtering Array,County Fire Authority,Covering Force Area CFAR- Christine's,Federal Acquisition Regulation CFC- ChloroFluoroCarbon,Canadian Fish Company CFES - Continuous Flow Electrophoresis System CFFZ - Call For Fire Zone CFG- Context-free grammar,Control flow graph CFHT - Canada-France-Hawaii Telescope CFI - Center for Inquiry (CSICOP) CFL- Canadian Football League,Co-ordinated Fire Line CFLCC - Coalition Forces Land Component Command CFM - Certified Facilities Manager [(IFMA)]http://www.ifma.org/ CFO - Chief Financial Officer CFP- Call for papers,College Football Playoff,Common Fisheries Policy (EU) CFR- Code of Federal Regulations,Căile Ferate Române (Romanian, "Romanian Railways") CFRP - Carbon fibre reinforced plastic CFS - Chronic Fatigue Syndrome CFSP - Common Foreign and Security Policy CFU - Colony Forming Unit in Microbiology CFV - Cavalry Fighting Vehicle CFZ - Critical Friendly Zone CG - Client Group - Computer Graphics - Controls Group - Democratic Republic of the Congo (FIPS 10-4 country code) - Republic of the Congo (ISO 3166 digram) CGDC - Computer Game Developers Conference (became GDC in 1998) CGF - Computer-Generated Forces (Simulation) CGH - Comparative Genomic Hybridisation CGIG - Cross-Government Implementation Group CGM - Computer Graphics Metafile CGO - Republic of the Congo (IOC and FIFA trigram, but not ISO 3166) CGS - Chief of the General Staff CGT - Capital Gains Tax ch - Chamorro language (ISO 639-1 code) ch - ch(L) is used to denote the Chern character of a line bundle CH - Chieftain tank - China (FIPS 10-4 country code) - Switzerland (ISO 3166 digram; from Latin Confoederatio Helvetica) cha - Chamorro language (ISO 639-2 code) CHAMPUS - (U.S.) Civilian Health and Medical Program of the Uniformed Services (now known as TRICARE) CHAOS - Cambridge Heart Anti-Oxidant Study CHAPS - Clearing House Automated Payment System CHDK - Canon Hack Development Kit (Canon camera firmware hack) che - Chechen language (ISO 639-2 code) CHE - Switzerland (ISO 3166 trigram; from Latin Confoederatio Helvetica) CHF - Swiss franc (ISO 4217 currency code) CHI - Columbia Helicopters, Inc CHI - Computer-Human Interaction CHiP - California Highway Patrol CHIPS - Cosmic Hot Interstellar Plasma Spectrometer CHL - Chile (ISO 3166 trigram) CHLA - Core Historical Literature of Agriculture CHN - China (ISO 3166 trigram) CHOGM - Commonwealth Heads of Government Meeting CHP - California Highway Patrol - Combined Heat and Power CHPSO - California Hospital Patient Safety Organization CHS - Combat Health Support CHT - Certified Hand Therapist chu - Old Church Slavonic language (ISO 639-2 code) chv - Chuvash language (ISO 639-2 code) CREN - Christian Real Estate Network Real Estate Association Ci - Curie CI- Chile (FIPS 10-4 country code),Côte d'Ivoire (ISO 3166 digram), Counter-Intelligence,101 (in Roman numerals) CIA- Cairo International Airport,Central Intelligence Agency,Culinary Institute of America CIAO- Critical Infrastructure Assurance Office,Component-Integrated ACE ORB CIB - Complete In Box (Internet auction/trading listings) CIBC - Canadian Imperial Bank of Commerce CICS - Customer Information Control System (IBM mainframe software; "kicks" or "C-I-C-S") CID- Combat Identification, Criminal Investigation Division,Criminal Investigations Department CID - Certified Interior Designer - A Certified Interior Designer (CID) licensed in New York (USA) plans, designs, supervises and/or consults on various aspects of interior spaces. CIEF - Comité international d'enregistrement des fréquences (International Frequency Registration Board) CIF - Cost, Insurance, and Freight (Paid) (shipping) CIMIC - Civil-Military Co-operation CIMMYT - (a/i) Centro Internacional de Mejoramiento de Maíz Y Trigo (Spanish, "International Maize and Wheat Improvement Center") CINC - Commander in Chief CINEOS - Campo Imperatore Near-Earth Object Survey CIO- Chief information officer,Congress of Industrial Organizations CIP - Combat Identification Panel CIPE - (European) Centre for International Political Economy CIR - (Commander's) Critical Information Requirements CIR - Corotating Interaction Region CIS- Canadian Interuniversity Sport,Commonwealth of Independent States,Command and Information System,Communication and Information System CISA - (U.S.) C4I Integration Support Activity CISB - Complete In Sealed Box (Internet auction/trading listings) CISPR - Comité international spécial des perturbations radioélectriques (Special International Committee on Radio Interference) CISSP - Certified Information Systems Security Professional CITES - Convention on International Trade in Endangered Species (of Wild Fauna and Flora) ("sigh-tease") CITS - Combat Identification Training System CIV - Côte d'Ivoire (ISO 3166 trigram) CIVETS - Colombia, Indonesia, Vietnam, Egypt, Turkey, South Africa (economics) CIVPOP - Civilian Population CIWS - Close-In Weapon System CHRS - Canadian Heart Rhythm Society CJ - Cayman Islands (FIPS 10-4 country code) - Criminal Justice CJC - Canadian Jewish Congress - Cold Junction Compensation CJD - Chronological Julian Day - Creutzfeldt-Jakob Disease CJCS - Chairman of the Joint Chiefs of Staff CJO - Chief of Joint Operations CJTF - Combined Joint Task Force CK - Cocos (Keeling) Islands (FIPS 10-4 country code) - Cook Islands (ISO 3166 digram) CKA - commonly known as, Canada Kicks Ass CKND - Codename: Kids Next Door Cl - Chlorine CL - Chile (ISO 3166 digram) - Co-ordination Line - One Hundred and Fifty (in Roman numerals) CLA - Clutterers Anonymous CLEC - Competitive Local Exchange Carrier CLEMARS - California Law Enforcement Mutual Aid Radio System CLI - Command Line Interface/Interpreter CLIC - Compact LInear Collider CLO - Cornell Lab of Ornithology CLOB - Character Large OBject CLOS - Command to Line-Of-Sight (missile control system) CLOS - Common Lisp Object System CLP - Chilean peso (ISO 4217 currency code) - Common [Operating/Operational] Land Picture CLPFC - CentroLateral PreFrontal Cortex CLRP - College Loan Repayment Program Cm - Curium CM- Cameroon (FIPS 10-4 country code; ISO 3166 digram), Cruise Missile, Nine Hundred (in Roman numerals) CMA- U.S. Chemical Materials Agency,Country Music Association (also used to refer to the organization's annual awards),Crystal Meth Anonymous CMB - Cosmic Microwave Background CMBR - Cosmic Microwave Background Radiation CME - Coronal Mass Ejection (usually Sun) CMHC - Canada Mortgage and Housing Corporation CMIIAW - Correct me if I am wrong CMIS- Content Management Interoperability Services,Common management information service CMJ - Christopher Martin-Jenkins (BBC sports commentator) CML- Chemical, Chronic Myelogenous Leukemia (formerly Chronic Myeloid Leukemia) CMLL - Consejo Mundial de Lucha Libre (Spanish, "Worldwide Wrestling Council"—Mexican professional wrestling promotion) CMM - Capability Maturity Model CMMC - Corps Materiel Management Centre CMML- Chronic MyeloMonocytic Leukemia,Continuous Media Markup Language CMO - Civil-Military Operations CMOC - Civil-Military Operations Centre CMOS- Canadian Meteorological and Oceanographic Society,(The) Chicago Manual of Style,Complementary Metal Oxide Semiconductor CMP - Common [Operating/Operational] Maritime Picture CMP - Canadian Military Pattern truck (World War II) CMPD - Chronic Myeloproliferative Disease CMPD - Charlotte Mecklenburg Police Department CMR- Cameroon (ISO 3166 trigram), Coaxial Main Rotors (helicopter type) CMS- Centers for Medicare and Medicaid Services,The Chicago Manual of Style CMT - Country Music Television CMU- Carnegie Mellon University,Central Michigan University,Concrete Masonry Unit CMW- Marconi's Wireless Telegraph Company of Canada,Canadian Manufacturing Week,Canadian Music Week,Catherine McAuley Westmead (school in New South Wales, Australia),Chicago, Missouri and Western (Railway),Compartmented Mode Workstation,Compton's Most Wanted,Continuous Microwave (processing technology),Custom Maintenance Wizard (Microsoft Office Resource Kit) CMYK - Cyan Magenta Yellow Key/blacK (colour model) CN-(i/s) Canadian National (railway; also the AAR reporting mark for said company), China (ISO 3166 digram),Comoros (FIPS 10-4 country code) CNA- Center for Naval Analyses,Certified Network Administrator,Computer Network Attack,Continental (Casualty Company), National (Fire Insurance Company), and American (Casualty Company), the three companies that merged to form what is now known as CNA Financial CNBC - (a/i) Consumer News and Business Channel CND- Campaign for Nuclear Disarmament,Computer Network Defence CNE- Canadian National Exhibition,Computer Network Exploitation,Certified Network Engineer CNF - Cost and Freight CNI - Communications, Navigation and Identification CNI - Clinical Nursing Intern CNN- Cable News Network,Cellular Nonlinear Network CNO - Computer Network Operations CNR- Canadian National Railway,Combat Net Radio CNV - Copy-Number Variable (genetics) CNY - Chinese yuan renminbi (ISO 4217 currency code) co - Corsican language (ISO 639-1 code) Co - Cobalt CO - many, including Central Office (phone company); see entry - Colorado (postal symbol) - Commanding Officer (military) COA - Certificate/Concept Of Analysis - Course Of Action (military) COB - Close Of Business [day] COBRA - Consolidated Omnibus Budget Reconciliation Act of 1985 COCOM - Combatant Command (military) COD - Cash On Delivery - Democratic Republic of the Congo (ISO 3166 trigram) CoDA - Co-Dependents Anonymous codec - Coder-Decoder / Compressor-Decompressor / Compression-Decompression algorithm COE - Cab Over Engine (see truck) - Common Operating Environment (military) COEA - Cost Operational Effectiveness Analysis (military) COEIA - Combined Operational Effectiveness and Investment Appraisal (military) COFT - Conduct Of Fire Trainer (military) COG - Centre Of Gravity - Current Operations Group (military) - Republic of the Congo (ISO 3166 trigram) COGENT - Cognitive Objects within a Graphical EnviroNmenT COIL - Chemical Oxygen Iodine Laser COIN - Counter-Insurgency (military) COK - Cook Islands (ISO 3166 trigram) COL - Colombia (ISO 3166 trigram) COLA - comp.os.linux.announce - Cost Of Living Adjustment COLT - Combat Observation and Lasing Team (military) COM - Comoros (ISO 3166 trigram) - Component Object Model COMECON - Council for Mutual Economic Assistance (economic counterpart of the Warsaw Pact, 1949-1991) COMMZ - Communications Zone (military) COMSEC - Communications Security (military) CONAD - U.S. Continental Air Defense Command CONCACAF - Confederation Of North, Central American and Caribbean Association Football CONMEBOL - Confederación Sudamericana de Fútbol or Confederação Sul-Americana de Futebol (respectively Spanish and Portuguese for "South American Football Confederation") CONOPS - Concept of Operations (military) CONUS - Continental United States COO - Chief Operating Officer COP - Colombian peso (ISO 4217 currency code) - Common Operating/Operational Picture COPE - U.K. Committee On Publication Ethics COPUS - U.K. Committee on the Public Understanding of Science cor - Cornish language (ISO 639-2 code) CORBA - Common Object Request Broker Architecture CORD - (i/a) Common Operational Requirements Document CORE - Consortium for Oceanographic Research and Education CORG - (U.S.) Combat Operations Research Group COROT - COnvection, ROtation and planetary Transits cos - Corsican language (ISO 639-2 code) - Cosine COS - Cooper Ornithological Society COSCOM - Corps Support Command (military) COSER - COoperative SERvice CoT - Car of Tomorrow (former NASCAR race car design) COTS - Commercial Off The Shelf Coy - Company (military unit)Cow CP - Canadian Pacific - Check Point - Command Post - Club Penguin CPA - Certified Public Accountant CPAC - Conservative Political Action Conference - Cable Public Affairs Channel ("see-pack") CPCU - Certified Property Casualty Underwriter CPD - Capabilities Production Document CPE - Certificate of Proficiency in English CPE - Certified Professional Ergonomist CPF - Calibration Parameter File - Canadian Patrol Frigate CPG - Clinical Practice Guideline CPI - CERDEC Command, Power and Integration CPIM - Certification on Production and Inventory Management CPIR - Computationally-Private Information Retrieval CPON - Certified Pediatric Oncology Nurse CPPCC - Chinese People's Political Consultative Conference CPR - Canadian Pacific Railway CPR - Cardiopulmonary resuscitation CPSM - Continuous Phase Shift Modulation CPSU - Communist Party of the Soviet Union CPT - Contingency Planning Team CPU - Central Processing Unit - Contract Postal Unit CPV - Cape Verde (ISO 3166 trigram) CPX - Command Post eXercise CQ - Carrier Qualification - Central Queensland - Charge of Quarters - Congressional Quarterly - Constellation Airlines (IATA airline designator) - Northern Mariana Islands (FIPS 10-4 territory code) CQD - Close Quarters Drill (Morse distress code preceding SOS: CQ "calling all stations", D "Distress"; often incorrectly interpreted as "Come Quick, Distress") cr - Cree language (ISO 639-1 code) Cr - Chromium CR- Coral Sea Islands (FIPS 10-4 territory code),Costa Rica (ISO 3166 digram) CRAM - Combined Radiometric Correction Model CRC- Central RTI Component,Chemical Rubber Company,Christian Reformed Church,Control and Reporting Centre,Cyclic Redundancy Check, Costa Rican colón (ISO 4217 currency code),Costa Rica (IOC and FIFA trigram, but not ISO 3166) CRD - Capstone Requirements Document cre - Cree language (ISO 639-2 code) CREB - Cyclic AMP-response Element Binding (protein) CREEP - Committee for the Re-Election of the President, a pejorative nickname used by opponents CRI- China Radio International, Costa Rica (ISO 3166 trigram) CRIPL - Consolidated Remain-In-Place List CRM - Cardiac Rhythm Management - Customer Relationship Management CRO - Croatia (IOC and FIFA trigram, but not ISO 3166) CRP- Committee for the Re-Election of the President,Control and Reporting Post CRT- Cardiac Resynchronization Therapy,Cathode Ray Tube,Chinese Remainder Theorem CRTC - Canadian Radio-television and Telecommunications Commission cs - Czech language (ISO 639-1 code) Cs - Caesium CS- Combat Support,Computer Scientist, Costa Rica (FIPS 10-4 country code),Serbia and Montenegro (ISO 3166 digram; obsolete since 2006) CSA- Canadian Soccer Association,Canadian Space Agency,Canadian Standards Association,Child Support Agency,Command Staff Advisor,Community-supported agriculture,Confederate States of America,Corps Storage Area, Czech Airlines,C/S/A - CINC, Service, and Agency CSAR - Combat Search and Rescue ("seessar") CSC- Closed Spacelike Curve (relativity),Compact system camera,Computer Sciences Corporation,Computer Security Centre,CSCC Canadian Society of Clinical Chemists CSEAL - (i/a) Combat Systems Engineering and Analysis Laboratory ("see-seal") CSERIAC - (U.S. DoD) Crew Systems Ergonomics Information Analysis Center CSG - Corps Support Group CSI - see entry CSICOP - Committee for the Scientific Investigation of Claims of the Paranormal (became the Committee for Skeptical Inquiry in 2006) CSIP - Commercial Stable Image Platform (AMD) CSIS- Canadian Security Intelligence Service ("seessiss"), (U.S.) Center for Strategic & International Studies CSK - Czechoslovakia (ISO 3166 trigram; obsolete since 1993) CSL - U.K. Central Science Laboratory CSPI - Center for Science in the Public Interest CSR - Control Supply Rate CSR - Corporate Social Responsibility [1] CSRC - Conflict Studies Research Centre CSRF - Cross-Site Request Forgery CSS- Cascading Style Sheets,Catalina Sky Survey,Central Security Service,Combat Service Support,Confederate States Ship,Content-scrambling system,Cross-site scripting CSSCS - Combat Service Support Control System CST - Central Standard Time (UTC−6 hours) CT - Computed tomography (medical scan also known as a CAT scan) - Central Time zone - Chrono Trigger (Computer/Video games) - Connecticut (postal symbol) - Canterbury (postal symbol) - Chhattisgarh (Indian state code) CTA- Central African Republic (FIFA trigram, but not ISO 3166 or IOC), Chicago Transit Authority, Comando-Geral de Tecnologia Aerospacial (Portuguese, [Brazilian] "General Command for Aerospace Technology") CTBT - Comprehensive [Nuclear] Test Ban Treaty CTC - Closed Timelike Curve (relativity) - (U.S.) Combat Training Center CTDB - Compact Terrain Data Base (file format) CTE- Canton and Enderbury Islands (ISO 3166 trigram; obsolete 1984), Chronic traumatic encephalopathy CTGF - connective tissue growth factor CTI - Co-operative Target Identification CTIL - Critical Tracked Items List CTIS - Central Tire Inflation System CTMS - Clinical Trial Management System CTO - Chief Technical Officer - Chief Technology Officer CTS - Clear-To-Send - Collective Training Standards - Communications Technology Service - Contract Technical Services - Conversation Time Sharing - COSMIC Top Secret CTSS - Compatible Time-Sharing System CTU - Counter Terrorist Unit (fictional branch of the Central Intelligence Agency in the television action series 24) CTVT - Canine Transmissible Venereal Tumour cu - Old Church Slavonic language (ISO 639-1 code) Cu - Copper (Latin Cuprum) CU - Carrie Underwood - Cuba (FIPS 10-4 country code; ISO 3166 digram) CUB - Cuba (ISO 3166 trigram) CUCV - Commercial Utility Cargo Vehicle CUNY - City University of New York ("CUE-knee") CUP - Cuban peso (ISO 4217 currency code) CUPE - Canadian Union of Public Employees ("CUE-pee") CUPS - Common Unix Printing System CUPW - Canadian Union of Postal Workers CUREA - Consortium for Undergraduate Research and Education in Astronomy CuW - Copper-tungsten pseudo-alloy (from the chemical symbols of the two component elements) CUW - Curaçao (ISO 3166 trigram) cv - Chuvash language (ISO 639-1 code) CV - many, including curriculum vitae (résumé); see entry CVCC- Combat Vehicle Command and Control,Compound Vortex Controlled Combustion (1970s Honda automobile engine technology) CVE - Cape Verde escudo (ISO 4217 currency code) CVI - Combat Vehicle Identification CVLL - Crypto Variable Logic Label CVR - Cockpit Voice Recorder - Combat Vehicle Reconnaissance CVS - Concurrent Versions System CVSD - Continuous Variable Slope Delta (modulation) CVT - Continuously Variable Transmission CW - Continuous Wave - Clothes Washer - Cook Islands (FIPS 10-4 territory code) CWC - Chemical Weapons Convention CWS - Canadian Wildlife Service CWRU - Case Western Reserve University CX - Christmas Island (ISO 3166 digram) - One Hundred and Ten (in Roman numerals) CXR - Christmas Island (ISO 3166 trigram) cy - Welsh language (ISO 639-1 code) CY - Calendar year - Cyprus (ISO 3166 and FIPS 10-4 country code digram) cym - Welsh language (ISO 639-2 code) CYM - Cayman Islands (ISO 3166 trigram) CYP - Cyprus (ISO 3166 trigram) - Cyprus pound (ISO 4217 currency code) CZ - Combat Zone - Czech Republic (ISO 3166 and FIPS 10-4 country code digram) CZE - Czech Republic (ISO 3166 trigram) CZK - Czech koruna (ISO 4217 currency code) CZF - (Christian Zombie Fan) CZMA - (US) Coastal Zone Management Act d - Deci D - Deuterium da - Danish language (ISO 639-1 code) - deca DA - Denmark (FIPS 10-4 country code) - Debtors Anonymous - U.S. Department of the Army - District Attorney DAB - Digital Audio Broadcasting DACT - Data Automated Communications Terminal - Dissimilar Air Combat Training DADVSI - Loi sur le droit d’auteur et les droits voisins dans la société de l’information (French, "Law on copyrights and related rights in the information society") DAES - Defence Acquisition Executive Summary - (UK MoD) Directorate of Analysis, Experimentation and Simulation DAF - Dissolved Air Flotation, a technique used in water treatment DAFIF - Digital Aeronautical Flight Information File DAK - Disney's Animal Kingdom dan - Danish language (ISO 639-2 code) DAO - Division Ammunition Officer DAQ - Data acquisition - Delivered Audio Quality DARE - Drug Abuse Resistance Education DARO - (i/a) (U.S.) Defense Airborne Reconnaissance Office DARPA - U.S. Defense Advanced Research Projects Agency DART - Disaster Assistance Response Team - Dublin Area Rapid Transit DAS - Defensive Aids Suite DASD - (U.S.) Deputy Assistant Secretary of Defense DASL - Datapoint's Advanced Systems Language DAU - (U.S.) Defense Acquisition University DAWN - (U.S.) Drug Abuse Warning Network dB - Decibel Db - Dubnium DB - Database - Deutsche Bahn DBA - De Bellis Antiquitatis (miniature wargaming rules) DBBL - (U.S. Army Simulation Center) Dismounted Battlespace Battle Laboratory DBCS - Double Byte Character Set DBDO - Desert BDO DBE - Dame Commander of the Order of the British Empire DBF - Detection By Fire (weapon launch signature) DBM - De Bellis Multitudinis (miniature wargaming rules) - Detection By Movement (military target) DBR - De Bellis Renationis (miniature wargaming rules) DBRA - Davis-Bacon Related Acts DBS - Direct Broadcast Services (television) DC - da capo - Italian Democrazia Cristiana - Digital Compass - Direct Current - District of Columbia (postal symbol) - Douglas Aircraft Company - Dublin Core - Duty Cycle DCA - Defensive Counter Air - Drum Corps Associates - DiChloroAcetate - Ronald Reagan Washington National Airport (IATA code) DCAA - (U.S.) Defense Contract Audit Agency DCAS - Devon and Cornwall Archery Society DCC - Dallas Christian College DCC - Digital Command Control (model railroading) - Direct Client-to-Client (Internet Relay Chat) - Dismounted Close Combat DCCP - Datagram Congestion Control Protocol DCD - [Organ] Donation after Cardiac Death DCE - Data Communication Equipment DCFC - Death Cab for Cutie DCI - Detection, Classification and Identification - Drum Corps International - Duellists' Convocation International, now known simply by the initials DCIM - Digital Camera Images DCIMS - Dental Classification Information Management System - Dismounted Combat Identification Marking System DCL - Disney Cruise Line DCN - Deacon DCOM - Disney Channel Original Movie DCOP - Desktop Communication Protocol DCSOPS - Deputy Chief of Staff for Operations and plans DCW - Digital Chart of the World DCYSC - Discovery Channel Young Scientist Challenge DD - many, including due diligence and dear daughter (increasingly prevalent on social mailing lists, blogs, and bulletin boards); see entry DDA- Digital Differential Analyzer (graphics algorithm),Digital Differential Analyzer,Deputy District Attorney DDD- Data Display Debugger,Digital Digital Digital (CD mastering) DDL - Digital Data Link DDN - U.S. Defense Data Network DDoS - Distributed Denial of Service DDP- Danish Design Prize,Deutsche Demokratische Partei (German, "German Democratic Party" - former political party in Weimar Germany),Diamond Dallas Page (American professional wrestler) DDR- Dance Dance Revolution,Deutsche Demokratische Republik (German, "German Democratic Republic" (GDR), East Germany),Double Data Rate, East Germany (ISO 3166 trigram, obsolete since 1990),DDR&E - (U.S.) Defense Department Research and Engineering DDS - Doctor of Dental Surgery DDT- Dichloro-Diphenyl-Trichloroethane (insecticide),Dynamic Debugging Tool (computing),DE[edit] de - German language (ISO 639-1 code) DE - Delaware (postal symbol) - Germany (ISO 3166 digram) DEA - Drug Enforcement Administration DEA - Drug Enforcement Agency DEC - (a/i) Department of Environmental Conservation - Digital Equipment Corporation - Disasters Emergency Committee DeCA - (U.S.) Defense Commissary Agency DECSIM - Model DEComposition and SIMulation algorithm - Directed Energy Combat SIMulation DECT - Digital European Cordless Telephone DEFCON - Defence readiness condition DEFRA - (UK) Department for Environment, Food and Rural Affairs DELT - Dual Ended Line Test (ing) DEM - Data Exchange Mechanism - Digital Elevation Model DEN - Denmark (IOC and FIFA trigram, but not ISO 3166) DEPSECDEF - (U.S.) Deputy Secretary of Defense DERA - British Defence Evaluation and Research Agency (1995-2001) DES - Deep Ecliptic Survey deu - German language (ISO 639-2 code) DEU - Germany (ISO 3166 trigram) DF- Direct Fire,Direction Finding,Distrito Federal (Spanish and Portuguese for "federal district") DFAD - Digital Feature Analysis Data ("dee-fad") DFAS - (U.S.) Defense Finance and Accounting Service DFB - Deutscher Fußball-Bund (German for "German Football Association") DFCB - Data Format Control Book DfID - UK Department for International Development DFL- Democratic-Farmer-Labor (the full designation of the Minnesota affiliate of the U.S. Democratic Party),Deutsche Fußball Liga (German for "German Football League"), the operator of the top two leagues of German football DFM - Dynamic Flowgraph Methodology DFM - (ii) Discrete Field Model see Superluminal motion DFSP - Dermatofibrosarcoma protuberans DfT - UK Department for Transport DFTBA - Don't Forget To Be Awesome- a term commonly used by the Vlogbrothers DG - Dei gratia (Latin, "by the grace of God") - Director-General - Data General DGA - Direction générale des armées (French "Armed Forces General Directorate") DGPS - Differential GPS DGZ - Desired Ground Zero DH - dear husband (increasingly prevalent on social mailing lists, blogs, and bulletin boards) - Designated hitter DHA - DocosaHexaenoic Acid DHHS - (U.S.) Department of Health and Human Services DHL - Dalsey, Hillblom, and Lynn (courier service) DHRA - (U.S.) DoD Human Resources Activity DHS - U.S. Department of Homeland Security DHSS - UK Department of Health and Social Security DHTFYSS - U.S. Don't Have Time For You Silly S**** DHY - Dahomey (ISO 3166 trigram; became BEN for Benin in 1977) DIA - U.S. Defense Intelligence Agency DIAC - Department of Immigration and Citizenship (Australia) [1] DiC - Design Island Centre (computing usually used in a teaching situation) DICASS - DIrectional Command Activated Sonobuoy System DILLIGAD - Do I Look Like I Give A Damn? (military shorthand, slightly less offensive than the following) DILLIGAF - Do I Look Like I Give A Fuck? (military shorthand) DIF - Data Interchange Format DIFAR - DIrectional Frequency Analysis and Recording DIME - Dense Inert Metal Explosive DIMM - Dual In-line Memory Module (computing) DIN- Deutsches Institut für Normung (German, "German Institute for Standardization"),Drug Identification Number (Canadian drug marketing requirement) DINA-(p/a) Diesel Nacional (Spanish, "National Diesel"—Mexican bus and truck manufacturer now known as DINA),Dirección de Inteligencia Nacional (Spanish, "National Intelligence Directorate"—former secret police of Chile) DINKY - Double Income, No Kids Yet DIP - Dual In-line Package (electronics) DIPS - Defense independent pitching statistics DIR - Defence Industrial Research DIS- Defence Intelligence Staff,(U.S.) Defense Investigative Service,Distributed Interactive Simulation,Draft International Standard (ISO) DISA- U.S. Defense Information Systems Agency,Distinguished Individual Service Award DISCOM - Division Support Command DISE - Deployable Intelligence Support Element DISSTAF - DIS Search and Target Acquisition Fidelity experiment DITY - (i/a) Do-It-Yourself div - Dhivehi language (ISO 639-2 code) DIVAD - Division Air Defence DIY - Do It Yourself DJ - Disc Jockey - Dinner Jacket - Djibouti (ISO 3166 digram; FIPS 10-4 country code) DJD - Degenerative Joint Disease - Dublin Julian Day - Discoveries in the Judaean Desert DJF - Djibouti franc (ISO 4217 currency code) DJI - Djibouti (ISO 3166 trigram) DJS - Director, Joint Staff DK - Denmark (ISO 3166 digram) DKK - Danish krone (ISO 4217 currency code) DL - Dexter's Laboratory DLA - U.S. Defense Logistics Agency - Dental Laboratories Association DLIC - Detachment Left-In-Contact DLIR - Depot-Level Inspection and Repair DLL - Dynamic Link Library DLPMC - DorsoLateral PreMotor Cortex DLR - Deutsches Zentrum für Luft- und Raumfahrt (German, German Aerospace Centre) - Docklands Light Railway DLRP - Data Link Reference Point DLS - Deep Lens Survey DLSA - (U.S.) Defense Legal Services Agency DLSc - Diploma in Library Science DLSC - U.S. Defense Logistics Services Center - U.S. Defense Logistics Support Command - Department of Library Special Collections (Western Kentucky University Libraries) - Direct Loan Servicing Center - Directorate of Land Strategic Concepts (Canada) - Dominican Lay Scholars Community DLTBGYD - Don't let the bastards grind you down DM- Dominica (ISO 3166 digram), Dungeon Master (role-playing games) DMA- Designated market area (primarily a U.S. term),U.S. Defense Mapping Agency (became NIMA, then NGA),Direct Memory Access (computing), Dominica (ISO 3166 trigram) DMC - (U.S.) Defense Management Council DMCA - Digital Millennium Copyright Act DMD- dentariae medicinae doctor (Latin, "doctor of dental medicine"),Digital Micromirror Device,Digital Multilayer Disk DMI - Desktop Management Interface (computing) DMM - Digital Multimeter DMOC - Distributed Mission Operations Centre DMOS - (i/a) Double Diffused MOS transistor ("dee-moss") DMPA - (U.S.) Defense Medical Programs Activity DMPFC - DorsoMedial PreFrontal Cortex DMPK - Drug Metabolism and Pharmacokinetics DMRB - Design Manual for Roads and Bridges DMS - U.S. Defense Message System DMSO- Dimethyl sulfoxide, U.S. Defense Modeling & Simulation Office ("dim-so"), now Modeling and Simulation Coordination Office DMSP - U.S. Defense Meteorological Satellite Program DMT - Dimethyltryptamine DMU - Diesel Multiple Unit, a method of connecting self-propelled railway vehicles together to form a train under the control of one driver. DMV - Department of Motor Vehicles DMZ - DeMilitarized Zone DN - Deacon DNA - U.S. Defense Nuclear Agency - DeoxyriboNucleic Acid - Douglas Noël Adams DNAW - Day Night All Weather DND - Department of National Defence (Canada) - Do Not Disturb DNDi - Drugs for Neglected Diseases initiative DNDO - U.S. Domestic Nuclear Detection Office DNM - Defence Nuclear Material DNK - Denmark (ISO 3166 trigram) DNR - Do Not Resuscitate DNS - Domain Name System DO - Dominica (FIPS 10-4 country code) - Dominican Republic (ISO 3166 digram) - Doctor of Osteopathic Medicine DOA - Dead On Arrival - Dead or Alive DOB - Date Of Birth DOD - U.S. Department of Defense DODAF - U.S. Department of Defense Architectural Framework DoDD - U.S. Department of Defense Directive DoDEA - (U.S.) Department of Defense Education Activity DOE - (i/a) U.S. Department of Energy DOHC - Dual-OverHead-Cam engine DOI - Digital Object Identifier - U.S. Department of the Interior DOM - Deo optimo maximo (Latin, "to God, the best and greatest") - Document Object Model - Dominican Republic (ISO 3166 trigram) DOMS - (U.S.) Director of Military Support DOP - Dominican peso (ISO 4217 currency code) DORA - Defence of the Realm Act DOS - Denial of Service (DoS, cf. DDoS) - Density of State - Disk Operating System DOT - Department of Transportation (U.S. federal or state) - Damage Over Time (common in World of Warcraft) DOTA - short-form for DEFENSE OF THE ANCIENTS a popular online epic game DotD - Deal of the Day (marketing gimmick) DOTMLPF - Doctrine, Organization, Training, Materiel, Leadership, Personnel, and Facilities (mnemonic) DOW - Died of Wounds DP - Division de production (Algerian petroleum company) DP - Decision Point - Dynamic Programming DPA - UK Defence Procurement Agency DPCO - Double-Pole Change Over DPDT - Double-Pole Double-Throw DPICM - Dual-Purpose Improved Conventional Munition DPKO - UN Department for Peacekeeping Operations DPMO - (U.S.) Defense Prisoner of War/Missing Personnel Office DPPDB - Digital Point Positioning Database DPRE - Displaced Person or Refugee (plural Displaced Persons and Refugees) (originally Displaced Persons, Refugees, Evacuees) DPRK - Democratic People's Republic of Korea DPST - Double-Pole Single-Throw DQ - Dairy Queen - Jarvis Island (FIPS 10-4 country code) DR - Dead Reckoning - Dominican Republic (FIPS 10-4 country code) - Danmarks Radio (Danish Broadcasting Corporation) DRA - Defence Research Agency (UK, 1991-1995) - Democratic Republic of America DRAGN - Double Radio source Active Galactic Nucleus ("dragon") DRAM - Dynamic Random Access Memory ("dee-ram") (computing) DRC - Democratic Republic of the Congo DRDC - Defence Research & Development Canada DREA - (i/a) Defence Research Establishment Atlantic (obsolete 2002) DRES - (i/a) Defence Research Establishment Suffield (obsolete 2002) DRET - (i/a) Defence Research Establishment Toronto (obsolete 2002) DREV - (i/a) Defence Research Establishment Valcartier (obsolete 2002) DRI - Detection, Recognition, Identification - Dietary Reference Intake DRIC - (i/a) (U.S.) Defense Research Information Center DRL - Daytime Running Lights - Dorman Roberts Ltd. DRM - Digital Rights Management DRMS - (U.S.) Defense Revitalization and Marketing Service DRPR - Drawing Practices DRT - Document Related Technologies Ds - Darmstadtium DS- Dear son (increasingly prevalent on social mailing lists, blogs, and bulletin boards),Defence Scientist,Direct Support, Dust Storm (METAR Code) DSA- (U.S.) Defense Support Activities,Division Support Area DSAA- (U.S.) Defense Security Assistance Agency,Driving Schools Association of the Americas,DECT Standard Authentication Algorithm DSAS - Disney Sing Along Songs DSB - (U.S.) Defense Science Board DSC- Differential Scanning Calorimeter,Digital Selective Calling,Digital Still Camera,Distinguished Service Cross,Doctor of Surgical Chiropody (obsolete),Document structure convention (PostScript programming),Dynamic Stability Control DSCS - U.S. Defense Satellite Communications System DSCSOC - DSCS Operations Center DSD - Defence Studies Department (King's College, London) DSDS - Deutschland sucht den Superstar (German, "Germany Seeks the Superstar"), the German version of the Idol series DSE - Dry Sheep Equivalent DSG - Direct-Shift Gearbox DSID - Dismounted Soldier Identification System DSL - Digital Subscriber Line DSLR - Digital single-lens reflex (camera) DSM - Diagnostic and Statistical Manual of Mental Disorders DSN - Deep Space Network DSO - Distinguished Service Order (British military decoration) dsp - decessit sine prole (Latin, "died without issue") - genealogy short-hand dspl - decessit sine prole legitima (Latin, "died without legitimate issue") dspm - decessit sine prole mascula [superstite] (Latin, "died without surviving male issue" ) dspml - decessit sine prole mascula legitima (Latin, "died without legitimate male issue") dspms - decessit sine prole mascula superstite (Latin, "died without surviving male issue") dsps - Decessit sine prole superstite (Latin, "died without surviving issue") DSP- Defense Standardization Program,Defense Support Program,Digital Signal Processing DSPL - Design Specialists and Plans Language DSR - Deformed Special Relativity DSRV- Deaf Sports Recreation Victoria,Deep Submergence Rescue Vehicle DSS- Digitized Sky Survey,Discarding-Sabot Shell (ammunition) DST - Daylight saving time DSTL - British Defence Science and Technology Laboratory dsvp - d.s.v.p. decessit sine vitae patria (Latin, "died within fathers lifetime") DSWA - (U.S.) Defense Special Weapons Agency DTA - Dental Technologists Association DTD - Digital Terrain Data DTE - Data Terminal Equipment - Down To Earth DTED - Digital Terrain Elevation Data ("dee-ted") DTG - Date-Time Group DTH - Direct To Home (television) DTI - UK Department of Trade and Industry DTIC - (U.S.) Defense Technical Information Center DTL - Diode-Transistor Logic (electronics) DTM- Deutsche Tourenwagen Masters (German, "German Touring Car Masters" - a current motor racing series),Deutsche Tourenwagen Meisterschaft (German, "German Touring Car Championship" - a defunct motor racing series) DTMF - Dual-tone multi-frequency signaling DTLOMS - Doctrine, Training, Leader development, Organization, Materiel, and Soldier (mnemonic) DTO - Disruptive Technology Office (was ARDA) DTOMLS - Doctrine, Training, Organization, Materiel, Leader and Soldier development (mnemonic) DTR - Determine The Relationship DTRA - Defense Threat Reduction Agency ("deet-ra") DTSA - (U.S.) Defense Technology Security Administration DU- Depleted Uranium, Dust (METAR Code) DUI- Data Use Identifier,Data Use Institute,Davis Unified Ignition,Diving Unlimited International,Documento Único de Identidad,Documento Unico de Importación,Driving Under the Influence,Duke University Improv DUMBO - Down Under the Manhattan Bridge Overpass (Brooklyn neighborhood) DUSD - (U.S.) Deputy Under-Secretary of Defense dv - Dhivehi language (ISO 639-1 code) DV- Daily Value (FDA food guide),Deo volente (Latin, "God willing") DVD - Digital Versatile Disk (was Digital Video Disk) DVLC - UK Driver and Vehicle Licencing Centre dvm - decessit vita matris (Latin, "died in the lifetime of the mother") DVM - Doctor of Veterinary Medicine DVO - Direct View Optics DVOM - Digital Volt-Ohm Meter DVP - various meanings (disambiguation page) dvp - decessit vita patris (Latin, "died in the lifetime of the father") dvu - decessit vita uxoris (Latin, "died in the lifetime of spouse") DW - Drum Workshop DWG - Divisional Wargame (military simulation) DWI - Dance With Intensity - Danish West Indies - Diffusion-weighted imaging - Direct water injection - Disaster Welfare Inquiry - Drinking Water Inspectorate - Driving While Intoxicated/Impaired DWM - Doctor Who Magazine DWIM - Do What I Mean DWTS - Dancing with the Stars DWW - Down with Webster DX- Dexterity (role-playing games), DeXtrorphan,Distant (radio), D-Generation X (professional wrestling stable) DXA - Dual-energy X-ray Absorptiometry DXM - DeXtroMethorphan Dy - Dysprosium DY - Dahomey (ISO 3166 digram; obsolete since 1977) dz - Dzongkha language (ISO 639-1 code) DZ - Algeria (ISO 3166 digram) - Drizzle (METAR Code) - Drop Zone DZA - Algeria (ISO 3166 trigram) DZD - Algerian dinar (ISO 4217 currency code) dzo - Dzongkha language (ISO 639-2 code) E - East EA - Electronic Attack - Emotions Anonymous - Engagement Area - Electronic Arts - Enrolled Agent - Environmental Assessment - Enterprise Architect - Exaampere EABU - Explain Acronyms Before Use EAC - Echelons Above Corps EAFUS - "Everything" Added to Food in the United States (FDA list) EAPC - Euro-Atlantic Partnership Council EASA - European Aviation Safety Agency EAST - Experimental Advanced Superconducting Tokamak EBCDIC - (a/i) Extended Binary Coded Decimal Interchange Code (pronounced "eb-see-dik") (cf. BCD) EBD - Electronic Brake Distribution EBE - Extraterrestrial Biological Entity EBO - (i/a) Effects Based Operations - Encyclopædia Britannica Online - European Board of Ophthalmology EBSA - Employee Benefits Security Administration EBW - Electron Beam Welding EBW - Exploding BridgeWire EC- Ecuador (ISO 3166 digram; FIPS 10-4 country code), Electronic Combat,European Community (see EEC), Exacoulomb ECB- England (and Wales) Cricket Board,European Central Bank ECBR - European Coalition for Biomedical Research ECASS - European Centre for Analysis in the Social Sciences [1] ECCM - Electronic Counter-Counter-Measures ECFS - Electronic Case Filing System ECG - Electrocardiogram ECHO- Each Community Helps Others (EPA programme),Educational Concerns for Hunger Organization,European Commission Host Organization,European Commission Humanitarian aid Office, Exchange Clearing House,Expanded Characteristic Option, Explanatory Coherence by Harmony Optimization ECHR - European Convention on Human Rights ECJ - European Court of Justice ECL - Emitter Coupled Logic (electronics) ECM- Electronic Counter-Measures,Enterprise Content Management ECommHR - European Commission on Human Rights ECS- Emergency Contact System,Enhanced Chip Set (computing),EOSDIS Core System,Extended Chip Set (computing) ECSC - European Coal and Steel Community (distant ancestor of the EU) ECT - ElectroConvulsive Therapy ECtHR - European Court of Human Rights ECU- Ecuador (ISO 3166 trigram), European Currency Unit (ancestor of the euro) ECW- Eastern Championship Wrestling/Extreme Championship Wrestling,ED[edit] EDA - European Defence Agency EDAC - Error Detection And Correction EDCS - Environmental Data Coding Specification EDD- Earliest due date,Electron-detachment dissociation,Elena Delle Donne (American basketball player),Employment Development Department (California state agency),End-diastolic dimension,Expected Date of Delivery (pregnancy) EDECSIM - Extended Directed Energy Combat Simulation EDGAR - Electronic Data Gathering, Analysis, and Retrieval (U.S. Securities and Exchange Commission filings database) EDH - Eastman Dental Hospital EDS- Electronic Data Systems,Electronic Differential System EDSA - Epifanio de los Santos Avenue (a major thoroughfare in Manila with great significance to post-1980 Philippines history) EDT - Eastern Daylight Saving Time (UTC−4 hours) EDTA- Electric Drive Transportation Association, EthyleneDiamineTetraAcetic acid,EE[edit] ee - Ewe language (ISO 639-1 code) EE- Estonia (ISO 3166 digram; from the country's native name of Eesti), Electrical engineering,Electrical Engineer,E&E - Escape and Evasion (training) EEC - European Economic Community (predecessor of the EU) EEG - ElectroEncephaloGram EEK - Estonian kroon (ISO 4217 currency code) EENT - End Evening Nautical Twilight EEO - Equal Employment Opportunity EEOC - (U.S.) Equal Employment Opportunity Commission EEZ - Economic Exclusion Zone or Exclusive Economic Zone EF- Electro-focus (Canon lens mount),Entry Foyer, Exafarad EFF - Electronic Frontier Foundation EFL - English as a Foreign Language EFM - Enterprise Feedback Management EFOA - European Fuel Oxygenates Association EFSA - European Food Safety Authority EFT - Electronic Fund Transfer EFTA- European Free Trade Area, European Free Trade Association EFV - Expeditionary Fighting Vehicle EG - Egypt (ISO 3166 digram; FIPS 10-4 country code) EGBUS - External Genitalia, Bartholin's glands, Urethra & Skene's glands EGCG - EpiGalloCatechin-3-Gallate EGIS - Erieye Ground Interface Segment EGP - Egyptian pound (ISO 4217 currency code) EGRET - Energetic Gamma-Ray Experiment Telescope EGY - Egypt (ISO 3166 trigram) EH - Exahenry - Western Sahara (ISO 3166 digram) EHA- Education for All Handicapped Children Act (U.S. federal legislation; since superseded by the Individuals with Disabilities Education Act), Emotional Health Anonymous EHF - Extremely High Frequency EHR - Equipment History Record Ei - Exbi EI - Ireland (FIPS 10-4 country code; from Éire) EIA - Environmental Impact Assessment EIAH - Environnements Informatiques pour l'Apprentissage Humain EIAH - Encyclopedia of Iranian Architectural History EIC - East India Company EICS - East India Company's Service eID - electronic ID EIRP - Effective Isotropic Radiated Power EIS - Environmental Impact Statement EJ - Exajoule EK - Equatorial Guinea (FIPS 10-4 country code) - Exakelvin EKG - Electrocardiogram (from German Elektrokardiogramm) EKMS - Electronic Key Management System el - Greek language (ISO 639-1 code) EL - Exalitre ELF-(a/i) Earth Liberation Front,Endangered Language Fund,Eritrean Liberation Front,Executable and Linkable Format,Extremely Low Frequency ELINT - Electronic Intelligence ell - Greek language (ISO 639-2 code) ELL - English Language Learner ELM - Edge-Localised Mode (plasma physics) ELO - Electric Light Orchestra ELP- Emerson, Lake & Palmer,European Left Party ELSS - Emergency Life Support Stores ELT - Emergency Locator Transmitter Em - Exametre EM - ElectroMagnetism/ElectroMagnetic EMA - (i/a) European Medicines Agency Embraer - Empresa Brasileira de Aeronáutica (Portuguese, "Brazilian Aeronautics Company") EMC- Electric Membership Corporation,Electromagnetic Compatibility,Electro-Motive Corporation,European Muon Collaboration,Evergreen Marine Corporation EMCON - (Electromagnetic) Emissions Control EMD- General Motors Electro-Motive Division,Engineering and Manufacturing Development,European Missile Defence EMDG - Euro-Missile Dynamics Group EMDR - Eye Movement Desensitisation and Reprocessing EMEA - Europe, Middle East and Africa EMF- Electromotive force,Epsom Mad Funkers (1990s-2000s indie dance band) EMG - ElectroMyoGraph EMO - Emergency Measures Organisation- Emotional EMP - ElectroMagnetic Pulse EMS - Emergency Medical Services EMT - Emergency Medical Technician EMU - Electric Multiple Unit - a method of connecting self-propelled railway vehicles together to form a train under the control of one driver. en - English language (ISO 639-1 code) EN- Corps of Engineers, Estonia (FIPS 10-4 country code),Exanewton ENCODE - Encyclopedia of DNA Elements (human genome data project) ENE - East North-East eng - English language (ISO 639-2 code) ENG - England (FIFA trigram; not eligible for an ISO 3166 or IOC trigram) ENSATT - École nationale supérieure des arts et techniques de théâtre (French, "Higher National School of Theatrical Arts and Techniques") ENT - Ear, Nose and Throat ENTEC - Euro NATO Training Engineer Centre ENVL - Envelope ENY - Enemy eo - Esperanto language (ISO 639-1 code) EO- Electro-Optics,Engagement Operations EOD - Explosive Ordnance Disposal EOG - ElectroOculoGraphy EOS- Earth Observation Satellite,(a/i) Electro-Optical System, Canon's autofocusing system for film and digital SLR cameras, Electrophoresis Operations in Space, a space manufacturing project of the McDonnell Douglas Astronautics Company EOSAT - Earth Observation Satellite EOSDIS - (a/i) Earth Observation Satellite Data and Information System EOTS- Electro-Optical Tactical Sensor,(a/i) Eye Of The Storm (World of Warcraft) EOM - End of Message EP - European Parliament EP - Extended play EPA- EicosaPentaenoic Acid, Environmental Protection Agency EPCOT - Experimental Prototype Community Of Tomorrow EPCR- Endothelial protein C receptor,European Professional Club Rugby EPFL - École polytechnique fédérale de Lausanne (French, "Lausanne Federal Institute of Technology") EPGS - EOS Polar Ground Sites EPIRB - (a/i) Emergency Position Indicating Radio Beacon EPL - English Premier League EPLRS - Enhanced Position Location Reporting System ("ee-plarz") epo - Esperanto language (ISO 639-2 code) EPO- Ellinikí Podosferikí Omospondía (Greek Ελληνική Ποδοσφαιρική Ομοσπονδία, translated as "Hellenic Football Federation"),European Patent Organisation or its main organ, the European Patent Office, Erythropoietin EPOS - Electronic Point Of Sale EPPA - Employee Polygraph Protection Act EPR - European Pressurised [Nuclear] Reactor EPW- Earth Penetrator Weapon/Warhead,Economic and Political Weekly (Indian publication),Enemy Prisoner of War,EQ[edit] EQ - Emotional Quotient EQG - Equatorial Guinea (FIFA trigram, but not IOC or ISO 3166) Er - Erbium ER- Emergency Room, Eritrea (ISO 3166 digram; FIPS 10-4 country code) ERA- Earned run average,Engineering Research Associates,Equal Rights Amendment,English Racing Automobiles,European Railway Agency ERCIM - (a/i) European Research Consortium for Informatics and Mathematics ERI - Eritrea (ISO 3166 trigram) ERLAWS - Eastern Ruapehu Lahar Alarm and Warning System ERN - Eritrean nakfa (ISO 4217 currency code) EROS - Earth Resources Observation System ERP - Engineer Regulating Point ERR - Eesti Rahvusringhääling ERS - Earth Resources Survey ERTS - Earth Resources Technology Satellite (became Landsat) ERV - Endogenous RetroVirus es - Spanish language (ISO 639-1 code) Es- Einsteinium,Exasecond ES- El Salvador (FIPS 10-4 country code), Electronic warfare Support, Exasiemens,Spain (ISO 3166 digram; from the country's native name of España) ESA- Electro-Spark Alloying,Endangered Species Act,European Space Agency ESC- Embryonic Stem Cell,Electronic Stability Control ESD - ElectroStatic Discharge ESDP - European Security and Defence Policy ESE - East South-East ESH - Western Sahara (ISO 3166 trigram) ESL - English as a Second Language ESM - Electronic warfare Support Measures ESO - European Southern Observatory ESOL - English for Speakers of Other Languages ESP- Electronic Stability Program,Extra-sensory perception, Spain (ISO 3166 trigram) ESPGHAN - European Society for Paediatric Gastroenterology, Hepatology and Nutrition ESPN - Entertainment and Sports Programming Network est - Estonian language (ISO 639-2 code) EST- Eastern Standard Time (UTC−5 hours), Estonia (ISO 3166 trigram) ESU - Emergency Services Unit ESV - Engineer Support Vehicle et - Estonian language (ISO 639-1 code) ET- Ethiopia (ISO 3166 digram; FIPS 10-4 country code) Exatesla- Extra Terrestrial ETA- Estimated Time of Arrival, Euzkadi Ta Azkatasuna ("etta", Basque, "Basque Homeland and Freedom"),et al. - et alii/aliae/alia (Latin, "and others") ETB - Ethiopian Birr (ISO 4217 currency code) ETF - Emergency Task Force (a special police unit, also jocularly said to stand for Extra-Thick Fuzz) ETH - Ethiopia (ISO 3166 trigram) ETI - Extra-Terrestrial Intelligence ETLA - Extended TLA ETM- Electronic Technical Manual,Enhanced Thematic Mapper ETOPS - Extended-range Twin-engine Operational Performance Standards (aviation) ETT - Embedded Training Team eu - Basque language (ISO 639-1 code) Eu - Europium EU- Europa Island (FIPS 10-4 country code), European Union EUCOM - (U.S.) European Command EULA - End-User License Agreement ("you-lah") EUR - euro (ISO 4217 currency code) eus - Basque language (ISO 639-2 code) EUUSA - European Union and United States of America EV - Exavolt EVA- Earned Value Analysis,Economic value added,Ethylene-Vinyl Acetate,Extra-Vehicular Activity EVIL - Electronic viewfinder (with) interchangeable lens (a type of digital camera) EW - Electronic Warfare - Exawatt ewe - Ewe language (ISO 639-2 code) EWR - Newark Liberty International Airport (IATA airport code) EWSD - Elektronisches Wählsystem Digital (German, "Electronic Digital Switching System") EWTN - Eternal Word Television Network EXFOR - Experimental Force (military) EXREP - Expeditious Repair (SM&R code) EYD-Ejaan Yang Disempurnakan (Indonesian, "Perfected Spelling System", used officially in Indonesia since 1972),Eurovision Young Dancers,EZ[edit] EZ - Czech Republic (FIPS 10-4 country code) - Extraction Zone EZLN - Ejército Zapatista de Liberación Nacional (Spanish, "Zapatista Army of National Liberation") f - Femto F - Farad - Fluorine fa - Persian language (ISO 639-1 code) FA - Food Addicts in Recovery Anonymous fA - Femtoampere FA - Field Artillery - Financial Aid - Football Association (England) FAA - U.S. Federal Aviation Administration - Financial Aid Administrator - Fleet Air Arm - Functional Area Analysis FAAD - Forward Area Air Defence FAADEZ - Forward Area Air Defence Engagement Zone FAAN - Fellow of the American Academy of Neurology FAAFP - Fellow of the American Academy of Family Physicians FAAN - Fellow of the American Academy of Nursing FAAQ - (a/i) Frequently Asked and Anticipated Questions (cf. FAQ) FAASV - Field Artillery Ammunition Supply Vehicle FAB - Feline Advisory Bureau (UK feline charity) FAC - Forward Air Controller - Front of Allies for Change - Frontal Affinity Chromatography - Full Aperture Calibrator FACA - (US) Federal Advisory Committee Act FACH - Fuerza Aérea de Chile FACN - Fellow of the American College of Nutrition FACP - Fellow of the American College of Physicians FACS - Fellow of the American College of Surgeons - Formal Aspects of Computing Science - Fluorescent-activated cell sorting FACTS - Flexible Alternating Current Transmission System FAD - Flavin Adenine Dinucleotide - Fuck A Duck - Funding Authorization Document FAH - Federation of American Hospitals - Fine Arts and Humanities - Foreign Affairs Handbook FAI - Fédération Aéronautique Internationale (French, "International Aeronautics Federation") - Football Association of Ireland FAM - Foreign Affairs Manual fao - Faroese language (ISO 639-2 code) FAO - Food and Agriculture Organization FAPA - Fellow of the American Psychological Association FAPHA - Fellow of the American Public Health Association FAQ - (a/i) Frequently Asked Questions (sometimes pronounced "fak") FARC - Fuerzas Armadas Revolucionarias de Colombia (Spanish, "Revolutionary Armed Forces of Colombia") FARDC - "Military of the Democratic Republic of the Congo FARP - Forward Arming and Refuelling Point / Forward Area Rearm/refuel Point fas - Persian language (ISO 639-2 code) FAS - Federation of American Scientists - Fetal Alcohol Syndrome FASCAM - Family of Scatterable Mines[1] FASD - Fetal Alcohol Spectrum Disorder FASEB - (a/i) Federation of American Societies for Experimental Biology FAT - Field Artillery Tractor - File Allocation Table FAVS - Future Armoured Vehicle System FAW - Football Association of Wales FB - Facebook, An on-line social network FBCS - Fellow of the British Computer Society FBI - Federal Bureau of Investigation FBIS - Foreign Broadcast Information Service FBIDST - Fellow of the British Institute of Dental and Surgical Technologists FBM - Board foot FBR- Fast Breeder Reactor,Foundation for Biomedical Research,Friedman, Billings, Ramsey (now known as Arlington Asset Investment) FBS-Federal Bureau of Statistics (Pakistan),Fetal bovine serum,Football Bowl Subdivision (U.S. college football),Fukuoka Broadcasting Corporation,FC[edit] fC - Femtocoulomb FC- Fire Control,Football Club, Funnel Cloud (METAR Code) FCA- Fellowship of Christian Athletes,Fiat Chrysler Automobiles,Fraction of Combat Active forces FCC - U.S. Federal Communications Commission FCE - First Certificate in English FCF - Financial Free Cash Flow FCLA - Fraud Claims Law Associate FCM- Federation of Canadian Municipalities,Fogarty's Cove Music FCO - UK Foreign and Commonwealth Office FCS- Football Championship Subdivision (U.S. college football),Future Combat System FCW - Florida Championship Wrestling FCZ - Forward Combat Zone FD - Falun Dafa FDA - Food and Drug Administration (U.S.) FDC - Federal Detention Center (U.S.) - Fire Direction Centre FDDI - Fibre Distributed Data Interface FDBK - (I) Feedback FDR - Flight Data Recorder - Franklin Delano Roosevelt Fe - Iron (Latin Ferrum) FE - Fully Exposed (armoured vehicle target, as opposed to Hull-Down) FEAR - First Encounter Assault Recon - False Evidence Appears Real FEAST - (a/i) Forum for European-Australian Science and Technology Cooperation FEATS - Festival of European Anglophone Theatrical Societies link title FEB- Federación Española de Baloncesto (Spanish, "Spanish Basketball Federation"),Federatie Eredivisie Basketball (Dutch, "Federation Honorary Division (of) Basketball"), the former name of the basketball competition now known in Dutch by the English-language Dutch Basketball League,Força Expedicionária Brasileira (Portuguese, "Brazilian Expeditionary Force") FEBA - Forward Edge of the Battle Area FED - (a/i) Field emission display FEDEP - Federation Development Process (Simulation) FEF - Frontal Eye Field (neurophysiology) FEI - Fédération équestre internationale (French, "International Federation for Equestrian Sports") FEMA-(a/i) Farm Equipment Manufacturers Association,(a/i) U.S. Federal Emergency Management Agency,Fire Equipment Manufacturers' Association FEMEXFUT - Federación Mexicana de Fútbol Asociación (Spanish, "Mexican Association Football Federation") FENAFUTH - Federación Nacional Autónoma de Fútbol de Honduras (Spanish, "National Autonomous Football Federation of Honduras") FENS - (a/i) Federation of European Neuroscience Societies FEP - Firepower Enhancement Program - Fleet satellite (FLTSAT) Extremely high frequency (EHF) Package FEPAFUT - Federación Panameña de Fútbol (Spanish, "Panamanian Football Federation") FES - Flywheel Energy Storage FEST - Frankfurt English Speaking Theatre link title FET - Field-effect transistor FEZ - (a/i) Fighter Engagement Zone ff - Fula language (ISO 639-1 code) fF - Femtofarad FF- Final Fantasy, Firefox (Web browser) FFA- Football Federation Australia,Pacific Islands Forum Fisheries Agency,Free-Fire Area,Fusiform Face Area,Future Farmers of America (today the National FFA Organization) FFB - Frum From Birth (referring to an observant Jew born into a religiously observant family) FFC - Free For Chat FFE - Fukuoka Futures Exchange FFF - Fédération française de football (French, "French Football Federation") FFG - Guided Missile Frigate (hull classification symbol) FFOV - Forward Field Of View FFR - Fédération française de rugby (French, "French Rugby (Union) Federation") FFS - For Fuck's Sake FFT- Fast Fourier Transform,Final Fantasy Tactics,FG[edit] FG - Falun Gong fg - Femtogram FG - Fog (METAR Code) - French Guiana (FIPS 10-4 territory code) FGR - Flickr Group Roulette fH - Femtohenry FHFIF - Foster's Home for Imaginary Friends FHI - Family Health International, Fuji Heavy Industries, Ltd. fi - Finnish language (ISO 639-1 code) FI - Finland (ISO 3166 digram; FIPS 10-4 country code) FIA - Fédération internationale de l'automobile (French "International Automobile Federation") FIAT - Fabbrica Italiana Automobili Torino (Italian "Italian Car Factory of Turin") FIB - Fucking Illinois Bastard (Wisconsin slang, variants exist) FIBA - originally Fédération internationale de basket-ball amateur (French, "International Amateur Basketball Federation"); since 1989, Fédération internationale de basket-ball FIBUA - (i/a) Fighting In Built-Up Areas FIC - Fellowship for Intentional Community FID - Foreign Internal Defence FIE - Fly-In Echelon FIFA - Fédération internationale de football association (French, "International Association Football Federation") FIFe - Fédération internationale féline (French, "International Feline Federation") FIFO - First In, First Out FIFRA - Federal Insecticide, Fungicide, and Rodenticide Act FIG- Fédération internationale des géomètres (French, "International Federation of Surveyors"),Fédération internationale de gymnastique (French, "International Federation of Gymnastics"),Feminist Improvising Group (music ensemble) FIGJAM - Fuck I'm Good, Just Ask Me fij - Fijian language (ISO 639-2 code) FILA - Fédération internationale des luttes associées (French, "International Federation of Associated Wrestling Styles"), former name of the sport governing body now known as United World Wrestling FILO - First In, Last Out (see also LIFO) FIMPT - Fellow of the Institute of Maxillofacial Prosthetists and Technologists fin - Finnish language (ISO 639-2 code) FIN - Finland (ISO 3166 trigram) FINA - (p/a) Fédération internationale de natation (French, "International Swimming Federation") FIPS - Federal Information Processing Standard FIR- Final Inspection Report,Federazione Italiana Rugby (Italian, "Italian Rugby (Union) Federation") FIRES - Fever Induced Refractory Epilepsy Syndrome or Febrile Infection-Related Epilepsy Syndrome FIS - (a/i) Fédération internationale de ski (French "International Ski Federation") FISA - Fédération Internationale des Sociétés d'Aviron (French, "International Federation of Rowing Associations") FISH - Fluorescence In-Situ Hybridisation FiST - Fire Support Team FITS - Flexible Image Transport System FIU - Florida International University fj - Fijian language (ISO 639-1 code) fJ - Femtojoule FJ - Fiji (ISO 3166 digram; FIPS 10-4 country code) FJD - Fiji dollar (ISO 4217 currency code) FJI - Fiji (ISO 3166 trigram) FJN - Financial Job Network fK - Femtokelvin FK - Falkland Islands (ISO 3166 digram; FIPS 10-4 territory code) FKP - Falkland Islands pound (ISO 4217 currency code) FKSM - Fort Knox Supplemental Manual FKT - Fastest Known Time fl - floruit (Latin, "living") (genealogy) fL - Femtolitre FL - Florida (postal symbol) FLA - Florida - Front Line Assembly - Future Large Aircraft FLAB - Four-letter abbreviation FLAC - (a/i) Free Lossless Audio Codec FLAC - (a/i) Free Legal Advice Centres FLAK - FLugAbwehrKanone (German for "Anti-Aircraft Guns") FLB - Forward Logistics Base FLET - (a/i) Forward Line of Enemy Troops FLG - Falun Gong FLIP - Flight Information Publication FLIR - Forward Looking InfraRed (sensor) FLK - Falkland Islands (ISO 3166 trigram) FLOT - (a/i) Forward Line of Own Troops FLSA - Fair Labor Standards Act FLQ - Front de libération du Québec (French for "Québec Liberation Front") FLQ - Free Legal Questions FLTSAT - Fleet Satellite FLTSATCOM - Fleet Satellite Communication System FLUBOS - Fat, Lazy, Useless, Bag Of Shit FM - Factory Mutual http://fmglobal.com fm - Femtometre Fm - Fermium FM- Federal Magistrate (Australian post-nominal), Federated States of Micronesia (postal symbol; ISO 3166 digram; FIPS 10-4 territory code), Field Manual,Flight Manager,Frequency Modulation (electronics) FMC- Federal Magistrates' Court (an Australian federal court, formerly FMS),Food Machinery Corporation (original name of the company now known as FMC Corporation) FMCA - Federal Magistrates' Court of Australia (used for citing decisions of the FMC other than family law decisions) FMCAfam - Federal Magistrates' Court of Australia: family (used for citing family law decisions of the FMC) FME - Formal Methods Europe FMECA - Failure Modes and Effect Criticality Analysis FMJD - Fédération Mondiale du Jeu de Dames[2] FMLA - Family Medical Leave Act Fmr - Former (As in "Fmr. president") fMRI - Functional Magnetic Resonance Imaging FMS- Federal Magistrates Service (an Australian federal court, now FMC), Flight Management System,Foreign Military Sales FMSF - False Memory Syndrome Foundation FMTV - Family of Medium Tactical Vehicles FMCG - (Fast Moving Consumer Goods) fN - Femtonewton FNA - Functional Needs Analysis fo - Faroese language (ISO 639-1 code) FO - Faroe Islands (ISO 3166 digram; FIPS 10-4 territory code) - Force Operations (military) - Forward Observer - Frame Optional (military symbology) FOAD - Fuck Off And Die FOAF - Friend Of A friend FoB - Free On Board (shipping) FOB - (i/a) Forward Operating Base FOC - Full Operational Capability - First of Class FoE - Friends of the Earth FOGC - Federal Oil and Gas Council FOH - Front Of House FOIA - Freedom of Information Act FOM - Federation Object Model FONSI - Finding of No Significant Impact FOO - Forward Observation Officer FOR - Field Of Regard - Frame Of Reference Fortran - The IBM Mathematical FORmula TRANslating System (programming language) FOS - Florida Ornithological Society - Full Operational Status FoS - Family of Systems FOSE - Fallout 3 Script Extender FOSE - Federal Office Systems Expo FOT - Free on truck FOTA - Fellow of the Orthodontic Technicians Association FOTC - Flight of the Conchords FOUO - For Official Use Only FOV - Field Of View FP - French Polynesia (FIPS 10-4 territory code) FPF- Federação Portuguesa de Futebol ("Portuguese Football Federation" in that language),Final Protective Fire fps - frames per second (motion pictures, television, computer graphics) FPS- Fire Prevention System,First Person Shooter (computer/video games) FOOP - Friends Of Organ Pipes (Volunteer group) FQ - Baker Island (FIPS 10-4 territory code) - French Southern and Antarctic Territories (ISO 3166 digram; obsolete 1979) FQDN - Fully Qualified Domain Name fr - French language (ISO 639-1 code) Fr - Francium FR - France (FIPS 10-4 country code; ISO 3166 digram) fra - French language (ISO 639-2 code) FRA- Federal Railroad Administration, France (ISO 3166 trigram) FRAGO - Fragmentary Order (military) FRAND - Fair, reasonable, and non-discriminatory (concept in standards-setting and intellectual property law) FRCP- Federal Rules of Civil Procedure,Fellow of the Royal College of Physicians FRICBM - Full Range ICBM frr - North Frisian language (ISO 639-2 code) FRR- Falls Road Railroad (reporting mark), Federaţia Română de Radioamatorism (Romanian, "Romanian Amateur Radio Federation"), Fix, Rebuild, Replace,Federaţia Română de Rugby (Romanian, "Romanian Rugby (Union) Federation") FRO - Faroe Islands (ISO 3166 trigram) FRS- Fellow of the Royal Society,U.S. Federal Reserve System FRSA - Fellow of the Royal Society of Art fry - West Frisian language (ISO 639-2 code) FRY - Federal Republic of Yugoslavia fs - Femtosecond fS - Femtosiemens FS- Fire Support (military), French Southern and Antarctic Territories (FIPS 10-4 territory code) FSA- Fire Support Area,UK Food Standards Agency,Functional Solution Analysis FSB- Federal'naya Sluzhba Bezopasnosti Rossiyskoi Federatsii (Федера́льная слу́жба безопа́сности Росси́йской Федера́ции, Russian "Federal Security Service of the Russian Federation", succeeded the FSK in 1995),Forward Support Battalion FSC- Federal Supply Classification, Forest Stewardship Council (ecological pressure group FSCL - Fire Support Co-ordination Line FSE - Fire Support Element FSF - Free Software Foundation FSH - Follicle Stimulating Hormone FSI - Fuel Stratified Injection FSK - Federal'naya Sluzhba Kontrrazvedki (Федера́льная Слу́жба Контрразве́дки, Russian "Federal Counterintelligence Service", succeeded the KGB in 1991) FSM- Federated States of Micronesia (ISO 3166 trigram), Flying Spaghetti Monster (satirical religion) FSO- Fire Support Officer,Flotilla Staff Officer,Foreign Service Officer FSS - Fire Support Station FSSP - Families of Structurally Similar Proteins FST- Finance Support Team,Finlands Svenska Television (Finland's Swedish-language television),Future Soviet Tank (Cold War era) FSTC - Foreign Science Technology Center (now NGIC) FSV- Fire Support Vehicle,Fisheries Survey Vessel,Flexible Sender Validation,Fort St. Vrain,Fußball und Sportverein (German "Football and Sport Association", as in FSV Mainz),FT[edit] fT - Femtotesla FTC - Federal Trade Commission FTE - Full Time Equivalent FTL - Faster Than Light FTP - File Transfer Protocol FTSE - (a/i) Financial Times Stock Exchange ("footsie") FTW - For The Win (a commonly used phrase used online to indicate success) F@#K The World, Forever Together Where ever (gang slogan) FTS - Flight Termination System used during some rocket launches FTS - Fuck That Shit FU - Smoke (METAR Code) FUBAR - Fucked/Fouled Up Beyond All Recognition/Repair FUCK - For, Unlawful, Carnal, Knowledge (Van Halen album title) FUD - Fear, Uncertainty & Doubt (marketing strategy) ful - Fula language (ISO 639-2 code) fV - Femtovolt fW - Femtowatt FW - Forward FWC - Football World Cup FWF - Fixed Word Format FWI - French West Indies FWIW - For What It's Worth FWS - U.S. Fish and Wildlife Service FWT - Fresh Water Tank FX - Firefox - Fox Extended - Metropolitan France (ISO 3166 digram; obsolete 1997) - Special effect FXX - Metropolitan France (ISO 3166 trigram; obsolete 1997) fy - West Frisian language (ISO 639-1 code) FY - Fiscal Year - Former Yugoslav Republic of Macedonia (NATO country code) FYA - For Your Agenda FYDP - Five-Year Defense Plan (U.S.) FYI - For Your Information FYROM - Former Yugoslav Republic of Macedonia FZDZ - Freezing Drizzle (METAR Code) FZFG - Freezing Fog (METAR Code) FZRA - Freezing Rain (METAR Code) g - Gram G - Gauss - General Audiences (movie rating) G1 - Assistant Chief-of-Staff, Personnel G2 - Assistant Chief-of-Staff, Intelligence G3 - many, including Heckler & Koch G3; see entry - Assistant Chief-of-Staff, Operations and Plans G4 - Generation Four PowerPC microprocessor - Assistant Chief-of-Staff, Logistics G5 - Generation Five PowerPC microprocessor - Assistant Chief-of-Staff, Public Affairs G6 - Assistant Chief-of-Staff, Information Technology - Group of 6 (France, Germany, United States, Japan, United Kingdom, Italy) (1975) G7 - Assistant Chief-of-Staff, Training - Group of 7 (G6 + Canada) (1976) G8 - Assistant Chief-of-Staff, Finance - Group of 8 (G7 + Russia) (1998) G9 - Assistant Chief-of-Staff, Civil-Military Co-operation (CIMIC) G10 - Group of 10 (G7 + Belgium, Netherlands, Sweden, Switzerland; numbering 11 in fact) G15 - Group of 15 (subset of G77, formed 1989: Algeria, Argentina, Brazil, Chile, Egypt, India, Indonesia, Jamaica, Kenya, Nigeria, Malaysia, Mexico, Peru, Senegal, Sri Lanka, Venezuela and Zimbabwe; currently numbers 17) G20 - Group of 20 (G8 + Argentina, Australia, Brazil, China, India, Indonesia, Mexico, Saudi Arabia, South Africa, South Korea, Turkey + current European Union presiding country) (1999) G24 - Group of 24 (subset of G77, formed 1971: Algeria, Argentina, Brazil, Colombia, Côte d'Ivoire, Democratic Republic of the Congo, Egypt, Ethiopia, Gabon, Ghana, Guatemala, India, Iran, Lebanon, Mexico, Nigeria, Pakistan, Peru, Philippines, South Africa, Syria, Sri Lanka, Trinidad and Tobago and Venezuela) G77 - Group of 77 (issued from the United Nations Conference on Commerce and Development, 1964; currently numbers 133) Ga - Gallium - Gigaannum GA - Gabon (ISO 3166 digram) - The Gambia (FIPS 10-4 country code) - Gamblers Anonymous - Georgia (postal symbol) - Gigaampere - Goa (Indian state code) GAAR - General Anti-Avoidance Rule (tax evasion) GAB - Gabon (ISO 3166 trigram) GABA - Gamma-AminoButyric Acid GAD - Generalized Anxiety Disorder GAF - Garfield and Friends GALCIT - Guggenheim Aeronautical Laboratory, California Institute of Technology GAO - U.S. Government Accountability Office GAW - Global Atmospheric Watch GB - Gabon (FIPS 10-4 country code) - United Kingdom of Great Britain and Northern Ireland (ISO 3166 digram) [glamour boy 7-9/10] GBBC - Great (Global) Backyard Bird Count GBE - Knight/Dame Grand Cross of the Order of the British Empire GBH- Great Bash Heel (Japanese professional wrestling stable),Gregory Bonner Hale (British design and advertising agency),Grievous bodily harm GBP - United Kingdom pound sterling (ISO 4217 currency code) GBR - United Kingdom of Great Britain and Northern Ireland (ISO 3166 trigram) GBU - Glide-Bomb Unit - Global Business Unit GC- East Germany (NATO country code; obsolete 1990), General classification (cycling),General counsel,George Cross (British civil decoration), Gigacoulomb [Grindr cruise] GCA - Graduate in Claims Administration GCCS - (i/a) Global Command and Control System ("geeks") GCD - see entry GCF - Greatest Common Factor GCI - Ground-controlled interception GCN - Gamma-ray burst Coordination Network GCS - Global Coordinate System GCSE - General Certificate of Secondary Education (UK) gd - Scottish Gaelic language (ISO 639-1 code) Gd - Gadolinium GD - Grenada (ISO 3166 digram) GDC - Game Developers Conference - General Dental Council GDL - Game Definition Language GDP - General Dental Practitioner (UK) - Gross Domestic Product GDR - German Democratic Republic (cf. DDR) GDR - General Distribution Release (Microsoft Term for a software service release; between Hotfix and Service Pack) GDW - Game Designers Workshop Ge - Germanium GE - General Electric - Genetic Engineering (cf. GM) - Georgia (ISO 3166 digram) GEBCO - General Bathymetric Chart of the Oceans GEC - Great Engineering Challenge GED - General Educational Development (high school equivalency credential in the U.S. and Canada) GEEP - Geophysical Equipment Exploration Platform GEL - Georgian lari (ISO 4217 currency code) - Gilbert and Ellice Islands (ISO 3166 trigram; obsolete 1977) GEMA - Gas and Electricity Markets Authority - Georgia Emergency Management Agency - Gesellschaft für musikalische Aufführungs- und mechanische Vervielfältigungsrechte (German performance rights organisation) - Global Engine Manufacturing Alliance GEN - Full General (four stars) in the U.S. Army GEO - Geostationary Earth Orbit - Georgia (ISO 3166 trigram) GEOS - Graphical Environment Operating System GEQ - Equatorial Guinea (IOC trigram, but not FIFA or ISO 3166) GER - Germany (IOC and FIFA trigram, but not ISO 3166) Gestapo - GEheime STAatsPOlizei (German "secret state police") GeV - Gigaelectron-volt GEV - Ground Effect Vehicle GF- French Guiana (ISO 3166 digram),Gigafarad GFCF- Gluten-free, casein-free diet,Gross fixed capital formation GFCI - Ground Fault Circuit Interruptor (aka GFI) GFDL - GNU Free Documentation License GFE- Girlfriend experience (used in escort services),Good Faith Estimate,Government Furnished Equipment GFI - Ground Fault Interruptor (aka GFCI) GFL - German Football League (Germany's Bundesliga for American football; the English-language name is used in German without translation) GFN - Global Footprint Network GFY - "good for you" or "go fuck yourself", depending on the context (Internet chat) GG - Georgia (FIPS 10-4 country code) GGK - Good God Karma GGP- General Game Playing,General Growth Properties (U.S. shopping center owner),GH[edit] GH - Ghana (ISO 3166 digram; FIPS 10-4 country code) - Gigahenry GHA - Ghana (ISO 3166 trigram) GHB - gamma-Hydroxybutyric acid GHC - Ghanan cedi (ISO 4217 currency code) Gi - Gibi GI - Galvanised Iron - Gastro-Intestinal - General Issue - Gibraltar (ISO 3166 digram; FIPS 10-4 territory code) - Government Issue GIB - Gibraltar (ISO 3166 trigram) GIF - Graphics Interchange Format GIG - Global Information Grid GIGO - Garbage In Garbage Out (computing) GIMP - GNU Image Manipulation Program GIN - Guinea (ISO 3166 trigram) - Guidelines International Network GINK - Going Insane Not Knowing - orig. Colorado 2010 M.Kalfas GINO - Godzilla In Name Only GIP - Gibraltar pound (ISO 4217 currency code) GIS - Geographic Information System - Google Image Search GISS - (a/i) General Impression of Size and Shape - Goddard Institute for Space Studies GJ - Gigajoule - Grenada (FIPS 10-4 country code) - Gujarat (Indian state code) GJD - Geocentric Julian Day GK - Gigakelvin - Guernsey (FIPS 10-4 territory code) gl - Galician language (ISO 639-1 code) GL- Gigalitre, Graphics Language, Greenland (ISO 3166 digram; FIPS 10-4 territory code), Grenade Launcher gla - Scottish Gaelic language (ISO 639-2 code) GLAAD - Gay and Lesbian Alliance Against Defamation GLAC - General Ledger Accounting Code GLAST - Gamma-ray Large Area Space Telescope GLBA - Gramm-Leach-Bliley Act GLC - Gas-liquid chromatography gle - Irish language (ISO 639-2 code) glg - Galician language (ISO 639-2 code) GLINT- Gallium-arsenide Laser Illuminator for Night TV,Gated Laser Illuminator for Narrow Television, Gated Laser Intensifier (tape),Gospel Literature International,Graphical Linux Installation Tool GLONASS - Globalnaya navigatsionnaya sputnikovaya sistema (Russian Глоба́льная Навигацио́нная Спу́тниковая Систе́ма, "Global Navigation Satellite System") GLP - Guadeloupe (ISO 3166 trigram) GLUT - (a/i) OpenGL Utility Toolkit glv - Manx language (ISO 639-2 code) GLV - Gained Life Value Gm - Gigametre GM- The Gambia (ISO 3166 digram), GameMaster (role-playing),General Motors,Genetically Modified, Germany (FIPS 10-4 country code), Guru Meditation (computing) GMAC- General Motors Acceptance Corporation, the original name of the company now known as Ally Financial,Graduate Management Admission Council,G-MAC, Great Midwest Athletic Conference GMB- The Gambia (ISO 3166 trigram), General, Municipal, Boilermakers (and Allied Trade Union) GmbH - Gesellschaft mit beschränkter Haftung (German, "Company with limited liability") GMC- U.K. General Medical Council,Gospel Music Channel GMD - Gambian dalasi (ISO 4217 currency code) GMFSC - Ground Mobile Forces Satellite Communications GMI- Generic Model Interface,Geometry Model Instance GML-Generalized Markup Language,Geography Markup Language,Game Maker Language,Graph Modelling Language,Graphical Motion Language,GUI Markup Language GMO - Genetically Modified Organism GMPCS - Global Mobile Personal Communications by Satellite GMT- Giant Magellan Telescope,Greenwich Mean Time,GN[edit] gn - Guaraní language (ISO 639-1 code) GN- Giganewton,Guinea (ISO 3166 digram) GNAS - Grand National Archery Society GNB - Guinea-Bissau (ISO 3166 trigram) GNC- "G&C Records" NetLabel,General Nutrition Centers (US sports nutrition retailer branded as GNC) GNF - Guinean franc (ISO 4217 currency code) GNOME - GNU Network Object Model Environment GNP - Gross National Product GNQ - Equatorial Guinea (ISO 3166 trigram) GnRH - Gonadotropin-Releasing Hormone GNU - GNU's Not Unix GO - Glorioso Islands (FIPS 10-4 territory code) GOA- General of the Army (United States only), Gun Owners of America GOAT - Greatest of all time (LL Cool J album title) GOC - General Officer Commanding GOES - Geostationary Operational Environmental Satellite GOP - Grand Old Party gorp - granola, oats, raisins, peanuts (another name for trail mix), probably a backronym GOSC - (a/i) General Officer Steering Committee GOSH - Great Ormond Street Hospital GOSP - Gas/Oil Separation Plant GOTS - Government off-the-shelf GOYADIN - Get Off Your Arse, Do It Now (anti-procrastination mantra) GP - General Practitioner - General Purpose - Grand Prix - Guadeloupe (ISO 3166 digram; FIPS 10-4 territory code) GPA - Grade Point Average GPC - Global Path Cache GPG - GNU Privacy Guard GPIB - General-Purpose Instrumentation/Interface Bus GPL - GNU General Public License GPMP - General Purpose Macro Processor GPO - General Post Office GPPC - Genetics and Public Policy Center GPR - Ground-Penetrating Radar GPS - General Problem Solver - Global Positioning System GPT - GEC-Plessey Telecommunications - General Purpose Technology - Get Paid To website GPU - Gosudarstvennoye Politicheskoye Upravlenie (Russian Государственное Политическое Управление, "State Political Administration") (1922-1934) - Graphics Processor Unit GQ- Equatorial Guinea (ISO 3166 digram), Gentlemen's Quarterly (the original name of the magazine now known simply as GQ), Guam (FIPS 10-4 territory code),GR[edit] GR - Greece (FIPS 10-4 country code; ISO 3166 digram) - Hail (METAR Code) GRAIL - Gravity Recovery and Interior Laboratory GRAS - Generally recognized as safe (FDA list) GRB - Gamma-Ray Burst GRC - Greece (ISO 3166 trigram) GRD - Grenada (ISO 3166 trigram) GRE- Graduate Record Examination, Greece (IOC and FIFA trigram, but not ISO 3166) grep - [search] Globally for Regular Expression, Print [lines] GRid - Global Release Identifier, a music industry identifier from the RIAA and IFPI GRID - Gay-Related Immune Deficiency (original name of AIDS) GriT - Girl raised in Texas (Woman presenting firm southern traits/beliefs) GRL - Greenland (ISO 3166 trigram) GRN- Grenada (IOC and FIFA trigram, but not ISO 3166), Goods Received Note grn - Guaraní language (ISO 639-2 code) GRP - Graphite-reinforced plastic, see Carbon-fiber-reinforced polymer GRU - Glavnoje Razvedyvatel'noje Upravlenije/Главное Разведывательное Управление (Russian, "Main Intelligence Directorate" [of the former Soviet and now Russian armed forces]) Gs - Gigasecond GS- General Schedule (US civil service pay scale),General Support, Gigasiemens,South Georgia and the South Sandwich Islands (ISO 3166 digram) GSR - Gun Shot Residue GSA - U.S. General Services Administration GSD - Graphical Situation Display GSG- German Sport Guns,Global Scenario Group (former environmental research organization),Grenzschutzgruppe (German, "Border Guard Group" — Germany's GSG 9 counterterrorist unit was originally a special branch of the border police) GSGB - (God send glamour boy 9-10/10) GSK - GlaxoSmithKline [good sexual karma] GSM- General Service Medal,Grams per Square Metre (paper thickness; properly g/m2),Ground Station Module,Groupe spécial mobile (French, "Special Mobile Group"; official expansion is now Global System for Mobile Communications) GSN - (a/i) Game Show Network GSO - General Services Officer (U.S. Department of State) GSOH - Good Sense Of Humour GSP - Georges St-Pierre (Canadian MMA fighter) GSS - Generic Security Services GST - Goods and Services Tax (Australia, Canada, and other countries) GSW - Gunshot wound GT - Gigatesla - Gran Turismo - Grand Touring - Guatemala (FIPS 10-4 country code; ISO 3166 digram) GTA - Grand Theft Auto GTB - Get to bed, namely to get a new job after a long time of searching, usually following a phone call GTC - Gran Telescopio Canarias (Spanish, Canaries Great Telescope) GTD - Getting Things Done GTG - Got To Go (Internet chat) GTK - Good To Know (Internet chat) GTGN - Getty Thesaurus of Geographic Names GTM - Guatemala (ISO 3166 trigram) GTQ - Guatemalan quetzal (ISO 4217 currency code) GTV - Gross Tumor Volume quetzal (ISO 4217 currency code) gu - Gujarati language (ISO 639-1 code) GU - Guam (postal symbol; ISO 3166 digram) GUA - Guatemala (IOC and FIFA trigram, but not ISO 3166) GUF - French Guiana (ISO 3166 trigram) GUI - Graphical user interface ("goo-ey") GUILT - Gangliated Utrophin Immuno Latency Toxin guj - Gujarati language (ISO 639-2 code) GULCR - Grupo de Usuarios de Linux de Costa Rica Gulag - Glavnoye Upravleniye ispravitelno-trudovykh LAGerei i kolonii (Russian Главное Управление Исправительно—Трудовых Лагерей и колоний, "Main Directorate of Corrective Labour Camps") GUM- Glavnyi Universalnyi Magazin (Russian Главный Универсальный Магазин, "Main Department Store"; known in Soviet times as Gosudarstvennyi Universalnyi Magazin/Государственный Универсальный Магазин, "State Department Store"), Guam (ISO 3166 trigram),Guide to the expression of Uncertainty in Measurement GUT - Grand Unification Theory gv - Manx language (ISO 639-1 code) GV - Gigavolt - Guinea (FIPS 10-4 country code) GW - Games Workshop - Germ Warfare - Gigawatt - Guided Weapon - Guinea-Bissau (ISO 3166 digram) GWARS - Ground Warfare System (simulation) GWAS - Grand Western Archery Society GWOT - Global War on Terrorism GWS - Gulf War Syndrome - Greater Western Sydney GXA - Global XML Web Services Architecture GXE - Gene-enivronment interaction GXF - General Exchange Format GXH - IATA code of Gannan Xiahe Airport GXL - Graph eXchange Language GXM - Matrox Graphics eXpansion Module GXP - Grid Exit Point - Global Xchange Programme - Indication of highest performance level on some Pontiac vehicles GxP - Good X Practice (X can mean: clinical, manufacturing, pharmaceutical, etc.) GXY - IATA code of Greeley-Weld County Airport GY - Guyana (FIPS 10-4 country code; ISO 3166 digram) GYD - Guyana dollar (ISO 4217 currency code) GYY - Gary/Chicago International Airport (IATA Airport Code) GZ - Gaza Strip (FIPS 10-4 territory code) - Ground Zero GZK - Greisen-Zatsepin-Kuzmin cut-off (cosmic ray energies) h - Hecto H - Henry - Hydrogen ha - Hausa language (ISO 639-1 code) - Hectare HA - Haiti (FIPS 10-4 country code) - High Availability HAARP - High Frequency Active Auroral Research Program HAART - Highly Active Anti-Retroviral Therapy HAI - Human Awareness Institute HAL - Hardware Abstraction Layer HALO - High Altitude Low Opening (parachute jump) HALT- Highly Accelerated Life Test, Hungry Angry Lonely Tired HAM - Amateur radio operator HANS - Head And Neck Support (device used in many race cars) HARM - High-speed Anti-Radiation Missile hat - Haitian Creole language (ISO 639-2 code) HAT - (i/a) Highest Astronomical Tide (nautical charts) - Hungarian Automated Telescope hau - Hausa language (ISO 639-2 code) HAW - Heavy Antitank Weapon HAWK - Homing All the Way Killer (air defence system) HAZ - Heat-Affected Zone HAZMAT - Hazardous Materials HBCD - HexaBromoCycloDodecane HBCI - Home Banking Computer Interface HBO - Home Box Office HBR - Harvard Business Review HBT - Heterojunction Bipolar Transistor HBV - Hepatitis B Virus HCCI - Homogeneous Charge Compression Ignition HCF - Highest Common Factor HCI - Human-Computer Interaction/Interface HCSC - Higher Command and Staff Course HCT - Higher Colleges of Technology, tertiary education institution in the United Arab Emirates (UAE) HD- Henry Draper (star catalogue),Hull-Down (armoured vehicle target, as opposed to Fully Exposed),High Definition,Huntington's Disease HDD- Hard Disk Drive,High-Density Disk HDL - High-Density Lipoprotein HDM - Human Decision-Making HDMI - High Definition Multimedia Interface HDR- Hard disk recorder,Henningson, Durham & Richardson (founders of the engineering and construction firm now known by their initials),High dynamic range, a term used in both digital imaging and 3D rendering,Hot Dry Rock (experimental geothermal technology),Human Development Report (UN publication) HDRA - Henry Doubleday Research Association HDTV - High-Definition Television he - Hebrew language (ISO 639-1 code) He - Helium HE - High Explosive HEAT - High Explosive Anti-Tank (ammunition) heb - Hebrew language (ISO 639-2 code) HEBA - Hellenic Basketball Clubs Association HEER - High-Explosive Extended Range (ammunition) HEIC - Honourable East India Company HEMP - High-Altitude Electromagnetic Pulse HEO- High Earth Orbit, Highly Elliptical Orbit HEOSS - High Earth Orbit Space Surveillance HEP - High-Explosive Plastic (ammunition) HEPA - (a/i) High-Efficiency Particulate Air (filter) her - Herero language (ISO 639-2 code) HESH - High-Explosive, Squash-Head (ammunition) HESV - Heavy Engineering Support Vehicle HETT - Heavy Equipment Transporting Truck / Heavy Equipment Truck Tractor HEU - Highly Enriched Uranium Hewitts - Hills in England, Wales and Ireland over Two Thousand feet (with topographic prominence of at least 30 m) Hf - Hafnium HF - High Frequency HFAC - Human Factors ("aytchfak") HFE - Human Fertilisation and Embryology (UK Act) HFE - The common-emitter current gain in a BJT transistor (also represented by βF). See: BJT HFEA - Human Fertilisation and Embryology Authority (UK) Hg - Mercury (Latin Hydrargyrum) HGC - UK Human Genetics Commission HGF - Human Growth Factor HGTV - Home & Garden Television HHD - humanitatum doctor (Latin, "doctor of humanities") HHB - Ha Ha Bonk - The noise made when you laugh your head off. Used instead of LOL... hi - Hindi language (ISO 639-1 code) HI - Hawaii (postal symbol) HIDACZ - High-Density Airspace Control Zone ("high dak zed/zee") HIH - His (or Her) Imperial Highness HIM - His (or Her) Imperial Majesty HIMAD - High to Medium Altitude Air Defence (see also H/MAD) HIMEZ - High Altitude Missile Engagement Zone HIMYM - How I Met Your Mother hin - Hindi language (ISO 639-2 code) HIPAA - U.S. Health Insurance Portability and Accountability Act Hipparcos - HIgh Precision Parallax COllecting Satellite Hird - Hurd of interfaces representing depth (cf. HURD) HiRISE - High Resolution Imaging Science Experiment HIT - Health Information Technology HIV - Human Immunodeficiency Virus HIWT - Hobart Institute of Welding Technology HJ - hic jacet (Latin, "here lies") HJD - Heliocentric Julian Day HK - Hong Kong (ISO 3166 digram; FIPS 10-4 territory code) HKD - Hong Kong dollar (ISO 4217 currency code) HKG - Hong Kong (ISO 3166 trigram) HKS - HyperKinetic Syndrome hL - Hectolitre HL - Holding Line HLA - High Level Architecture (simulation) - Human Leukocyte Antigen HLL - High-Level Language HLN - Headline News HLOS - High Level Output Specification HLS - hoc loco situs (Latin, "laid in this place") HLVW - Heavy Logistics Vehicle, Wheeled HM - Heard Island and McDonald Islands (ISO 3166 digram; FIPS 10-4 territory code) HMCE - Her/His Majesty's Customs and Excise (former UK government department; succeeded by HM Revenue and Customs) HMCS- Her/His Majesty's Canadian Ship,Her Majesty's Courts Service (former UK agency; succeeded by Her Majesty's Courts and Tribunals Service) HMD - Heard and McDonald Islands (ISO 3166 trigram) HMF - HydroxyMethyl Furfural HMM - Hidden Markov model HMMWV - High Mobility Multipurpose Wheeled Vehicle ("hum-vee"; "hummer") hmo - Hiri Motu language (ISO 639-2 code) HMO - Health maintenance organization HMP - Her Majesty's Prison HMRC - Her/His Majesty's Revenue and Customs HMS- Helmet-mounted display,Her/His Majesty's Ship (Royal Navy) HMSO - Her Majesty's Stationery Office HMV - His Master's Voice HN - Honduras (ISO 3166 digram) HND - Honduras (ISO 3166 trigram) HNL - Honduran lempira (ISO 4217 currency code) ho - Hiri Motu language (ISO 639-1 code) Ho - Holmium HO - Honduras (FIPS 10-4 country code) HOLLAND - Hope Our Love Lasts And Never Dies HOMES - the Great Lakes; Huron, Ontario, Michigan, Erie, Superior HONY - Humans of New York, a photoblog. HOPI - Hybrid Optical and Packet Infrastructure (see Internet2, Abilene Network) HoReCa - Hotel, Restaurant and Catering HORIZON - Hélicoptère d'observation radar et d'investigation sur zone (French, Zone Investigation and Radar Observation Helicopter) HOSTAC - Helicopter Operations from Ships Other Than Aircraft Carriers HOT - Highly Optimised Tolerance HOTAS - Hands on throttle-and-stick HOV - High Occupancy Vehicle hp - horse power HP - Hewlett-Packard - Hindustan Petroleum - Himachal Pradesh (Indian state code) HPA - UK Health Protection Agency HPCL - Hindustan Petroleum Corporation Limited HPLC - High Performance Liquid Chromatography HPT - High[er] Payoff Target HPV - Human Papilloma Virus HQ - HeadQuarters - Howland Island (FIPS 10-4 territory code) HQDA - HeadQuarters, Department of the Army hr - Croatian language (ISO 639-1 code) HR- Croatia (FIPS 10-4 country code; ISO 3166 digram - from the country's native name of Hrvatska) - Haryana (Indian state code), Harvard Revised star catalogue,Human Resources HRBL - High-level Representation of Behavior Language (original name of the Herbal language) HRD - Human Resource Development HRED - (U.S. Army Research Laboratory's) Human Research and Engineering Directorate (Aberdeen Proving Ground, Maryland) HRF - High iness Forces HRH - His (or Her) Royal Highness HRK - Croatian kuna (ISO 4217 currency code) HRM - His (or Her) Royal Majesty HRM - Human Resource Management HRT - Hormone Replacement Therapy hrv - Croatian language (ISO 639-2 code) HRV- Croatia (ISO 3166 trigram), High Resolution Visible,HS[edit] Hs - Hassium HSBC - The Hong Kong and Shanghai Banking Corporation HSC - Higher School Certificate HSM - High School Musical HSMAD - Human Science/Modeling and Analysis Data HSN - Home Shopping Network HSPH - Harvard School of Public Health HSS- Health Service Support, High-Speed Steel HSSI - High-Speed Serial Interface HST - see entry HSV- Herpes Simplex Virus,Hue Saturation Value (colour model),HT[edit] ht - Haitian Creole language (ISO 639-1 code) HT- Haiti (ISO 3166 digram), High Temperature,hoc tempore (Latin, "at this time"),hoc titulo (Latin, "under this title") HTA - HyperText Application HTC-High Tech Computer Corporation, original name of the company now known simply as HTC,Horry Telephone Cooperative HTFU - Harden The Fuck Up HTG - Haitian gourde (ISO 4217 currency code) HTH - Hope That Helps HTI - Haiti (ISO 3166 trigram) HTML - HyperText Markup Language HTR - Heated Towel Rail HTS - High-Temperature Superconducting wire HTTP - HyperText Transfer Protocol HU - Hungary (ISO 3166 digram; FIPS 10-4 country code) HUD - (i/a) Head-Up Display - Housing and Urban Development HUF - Hungarian forint (ISO 4217 currency code) HUHA - Head up his/her ass (Marine salute; probably a backcronym) HUMINT - Human Intelligence (military parlance) hun - Hungarian language (ISO 639-2 code) HUN - Hungary (ISO 3166 trigram) HURD - Hird of Unix-Replacing Daemons (cf. Hird) HVU - High Value Unit (military) HV - Upper Volta (ISO 3166 digram; obsolete 1984) HVAC - Heating, ventilation and air conditioning Used in architecture, business and marketing; refers to a building's entire system of heating, moving, or cooling air. HVAP - High Velocity Armour Piercing (ammunition) HVHF - High velocity human factors HVM - High Velocity Missile HVO - Upper Volta (ISO 3166 trigram; obsolete 1984) HVP - HarborView Properties - High vacuum process - Hydrolyzed vegetable protein - Human Variome Project - High Velocity Protection - H.V.P. (rapper) - High Voltage Protection - High Vapor Pressure - Hub Voice Processor - High-Velocity Projectile - High-Video Pass - High-Velocity Particle HW - Hardware - High Water (nautical charts) HWM - Hardware morphing (computer graphics rendering) HX - IATA code of Hong Kong Airlines - Medical history - Hydrogen halide - Concept automobile by HUMMER HXB - The glycoprotein Tenascian C hy - Armenian language (ISO 639-1 code) hye - Armenian language (ISO 639-2 code) HYS - Harvard, Yale, Stanford (perennially named as the top three law schools in the U.S.) hz - Herero language (ISO 639-1 code) Hz - Hertz HZ - Haze (METAR Code) I - Iodine - One (in Roman numerals) ia - Interlingua language (ISO 639-1 code) IA - Iowa (postal symbol) IAAF - International Association of Athletics Federations ("International Amateur Athletics Federation" from 1912 to 2001) IAAL - I Am A Lawyer IAB - International Association for Biologicals IACREOT - International Association of Clerks, Recorders, Election Officials, and Treasurers IAD - Ion Assisted Deposition IADS - Integrated Air Defence System IAEA - International Atomic Energy Agency IAF - {i} Industrial Areas Foundation IAFG - Information Assurance Focus Group IAI - International African Institute - Israel Aircraft Industries IANA - Internet Assigned Numbers Authority IANAL - I Am Not A Lawyer IAQ - Indoor air quality - Infrequently Asked Questions IAS - Image Assessment System IASIP - It's Always Sunny in Philadelphia IATA - (a/i) International Air Transport Association IATF - International Automotive Task Force IATSE - International Alliance of Theatrical Stage Employees IAU - International Association of Universities - International Astronomical Union IAUC - International Astronomical Union Circular IAW - In Accordance With IB - International Baccalaureate IBA - Important Bird Area IBD - Inflammatory Bowel Disease IBDM - Information Based Decision Making IBDS - Integrated Biological Detection System - International Business Development Specialist IBM - International Business Machines ibo - Igbo language (ISO 639-2 code) IBRD - International Bank for Reconstruction and Development (part of the World Bank) IBS - Irritable Bowel Syndrome IC - Ice Crystals (METAR Code) - Iceland (FIPS 10-4 country code) - Integrated Circuit - [inner circle] ICANN - Internet Corporation for Assigned Names and Numbers ICAO - International Civil Aviation Organization ICBM - Intercontinental Ballistic Missile ICBM - I see (phonetically "c") BatMan ICBN - International Code of Botanical Nomenclature ICC - Integrated Command and Control - International Criminal Court - International Cricket Council - Interstate Commerce Commission - International Chamber of Commerce ICD - Implantable Cardioverter-Defibrillator - Initial Capabilities Document - International Classification of Diseases ICE - (i/a) In case of emergency ICES - (a/i) International Council for the Exploration of the Sea ICF - Intelligent Community Forum ICHTHYS - Iesous Christos, Theou Yios, Soter (Greek, "Jesus Christ, Son of God, Savior") ICM - Improved Conventional Munition - Integrated Collection Management - International Congress of Mathematicians - Iraq Campaign Medal ICMP - Internet Control Message Protocol ICNAF - International Commission for the Northwest Atlantic Fisheries (became NAFO in 1978) ICNI - Integrated Communication, Navigation, and Identification ICO - Intermediate Circular Orbit ICP - Inductively coupled plasma - Insane Clown Posse ICPE - (a/i) International Conference on Pharmacoepidemiology, the annual conference of the International Society for Pharmacoepidemiology ICRAF - International Centre for Research in Agroforestry (a.k.a. World Agroforestry Centre since 2002) ICRISAT - (i/a) International Crops Research Institute for the Semi-Arid Tropics ICRL - Individual Component Repair List ICRS - International Celestial Reference System ICS - In-Country Support - Intelligence and Communications Systems - Interim Contractor Support ICSI - Intracytoplasmic Sperm Injection ICT - Information and communication technologies ICTH - Island Closest to Heaven/Hell Final Fantasy VIII ICV - Infantry Carrier Vehicle ICW - In Co-ordination With - Indonesia Corruption Watch - Infectious and Chemotherapeutic Waste - Insulating Concrete Wall - Integral Crystalline Waterproofing - Interactive Courseware ICYMI - In Case You Missed It ICZN - International Code of Zoological Nomenclature - International Commission on Zoological Nomenclature id - Indonesian language (ISO 639-1 code) ID- Idaho (postal symbol), Identity, Indonesia (FIPS 10-4 country code; ISO 3166 digram), Infantry Division,Intelligent Design,ID10T Error - Idiot User Error (IT help desk inside joke) IDA- U.S. Institute for Defense Analyses,International Development Association (part of the World Bank IDC - International Data Corporation IDDI - I don't do initialisms (see irony) IDE- Integrated Development Environment,Integrated Drive Electronics IDeA - Improvement and Development Agency, the former name of Local Government Improvement and Development in the United Kingdom IDEA- Individuals with Disabilities Education Act (U.S.),International Data Encryption Algorithm,International Design Excellence Awards IDF- Israel Defense Forces,Intel Development Forum,International Dairy Federation IDGAF - I don't give a fuck IDK - I don't know IDKIBTI - I don't know, I'm black, that's it IDL - Interface Definition Language IDN - Indonesia (ISO 3166 trigram) ido - Ido language (ISO 639-2 code) IDR - Indonesian rupiah (ISO 4217 currency code) ie - Interlingue language (ISO 639-1 code) IE - Indo-European languages - Internet Explorer - Ireland (ISO 3166 digram) - Iced Earth IEA - International Energy Agency IEC - International Electrotechnical Commission IED - Improvised Explosive Device IEEE - Institute of Electrical and Electronics Engineers ("I triple-E") IELTS - International English Language Testing System IER - Information Exchange Requirement IET - Institution of Engineering and Technology IET - (ii) Initial Entry Training IETF - Internet Engineering Task Force IEW - Intelligence and Electronic Warfare IFAB - International Football Association Board IFAH - International Federation for Animal Health IFAP - International Federation of Agricultural Producers IFC - International Finance Corporation (part of the World Bank) - Independent Film Channel IFF - Identification, Friend or Foe - Individually Fresh Frozen - International Flavors and Fragrances IFFN - Identification, Friend, Foe, or Neutral IFO - Identified Flying Object (see also UFO) IFOR - UN Implementation Force - Institute for Operations Research - International Fellowship of Reconciliation IFOV - Instantaneous Field of View IFPI - International Federation of Phonographic Industries IFR - Instrument Flight Rules IFRB - International Frequency Registration Board IFV - Infantry Fighting Vehicle ig - Igbo language (ISO 639-1 code) IG - Inspector General IGNOU - Indira Gandhi National Open University IGS - International Ground Station IGY - Israeli Gay Youth - International Geophysical Year IHH - Idiopathic Hypogonadotropic Hypogonadism IHO - (i/a) International Hydrographic Organization IHOP - (i/a) International House of Pancakes, the original name of this American restaurant chain ("EYE-hop") IHR - Institute for Historical Review IHSI - Institutum Historicum Societatis Iesu (Jesuit Historical Institute) ii - Sichuan Yi language (ISO 639-1 code) II - Two (in Roman numerals) IICA - Inter-American Institute for Cooperation on Agriculture IIE - Innovative Interstellar Explorer iii - Sichuan Yi language (ISO 639-2 code) III - Three (in Roman numerals) IIRC - If I Recall/Remember Correctly IISS - International Institute for Strategic Studies IIT - Illinois Institute of Technology - Indian Institutes of Technology - Indiana Institute of Technology IJN - Imperial Japanese Navy (World War II) IJWP - Interim Joint Warfare Publication ik - Inupiaq language (ISO 639-1 code) IKEA - Ingvar Kamprad (the company's founder), Elmtaryd (the farm where he was born and raised), Agunnaryd (a village and parish near the farm) iku - Inuktitut language (ISO 639-2 code) IL - Illinois (postal symbol) - Israel (ISO 3166 digram) ILC - International Law Commission - International Linear Collider ILDS - Improved Landmine Detection System ile - Interlingue language (ISO 639-2 code) ILO - International Labour Organization ILRI - International Livestock Research Institute ILS - Israeli shekel (ISO 4217 currency code) ILY - IATA code for Islay Airport (Scotland), I Love You [pronounced ILL-LEE] IM- Isle of Man (FIPS 10-4 territory code), Instant Message (internet speech) IMA- Intermediate Maintenance Activity,Institute of Mathematics and Applications IMBD - International Migratory Bird Day IMDb - Internet Movie Database IME - In My Experience IMF- id music file/id's music format (audio file format),Impossible Missions Force, the protagonist organization in the Mission: Impossible media franchise,International Monetary Fund (the most common use for the initialism) IMHO - In My Humble/Honest Opinion, cf. IMO IML - International Mister Leather IMLAST - International Movement for Leisure Activities in Science and Technology - see MILSET IMNM - - Immune-mediated necrotizing myopathy a rare, but serious ADR of statins [1] IMNSHO - In My Not So Humble Opinion IMPAC - International Merchant Purchase Authorization Card IMPACT - International Medical Products Anti-Counterfeiting Taskforce IMPATT - IMPact Avalanche Transit Time diode IMPT - Institute of Maxillofacial Prosthetists and Technologists IMR - Inzhenernaya Mashina Razgrazhdeniya (Russian Инженерные Машины Разграждения, "Engineer Vehicle Obstacle-Clearing") † IMRI- Industrial Membrane Research Institute,Information Management Research Institute,Institut pour le management de la recherche et de l'innovation (French, "Institute for the Management of Research and Innovation"),International Market Research Information,Intraoperative Magnetic Resonance Imaging IMRO-Internal Macedonian Revolutionary Organization,Irish Music Rights Organisation IMRL - Individual Material iness List IMS- Information Management System,International Meat Secretariat,Ion Mobility Spectrometer IMSA- Illinois Mathematics and Science Academy,International Mind Sports Association,International Motor Sports Association IMsL - International Ms. Leather IMT - Integrated Management Tool IMU - International Mathematical Union In - Indium IN - India (FIPS 10-4 country code; ISO 3166 digram) - Indiana (postal symbol) - Infantry ina - Interlingua language (ISO 639-2 code) INA - Immigration and Nationality Act INAS - International Near-Earth Asteroid Survey INC - Iglesia ni Cristo (Filipino, "Church of Christ") - Indian National Congress - International Network of Crackers - Iraqi National Congress INCITS - InterNational Committee for Information Technology Standards ind - Indonesian language (ISO 639-2 code) IND - India (ISO 3166 trigram) inet - the Internet INDIGO - (U.S.) INtelligence DIvision Gaming Operation INFORMS - (U.S.) Institute for Operations Research and the Management Sciences INFOSEC - Information Security INLA - Irish National Liberation Army INMARSAT - International Maritime Satellite organization INR - Indian rupee (ISO 4217 currency code) INRI - (a/i) Iesus Nazarenus Rex Iudæorum (Latin, "Jesus of Nazareth, King of the Jews") INRIA - Institut national de recherche en informatique et en automatique INS - Immigration and Naturalization Service InSAR - Interferometric synthetic aperture radar INST - Information Standards and Technology INTSUM - Intelligence Summary INTERFET - International Force for East Timor io - Ido language (ISO 639-1 code) IO - British Indian Ocean Territory (ISO 3166 digram; FIPS 10-4 territory code) IOC- Initial Operational Capability,Intergovernmental Oceanic Commission,International Olympic Committee,International Ornithological Congress IOLTA - Interest on Lawyer Trust Accounts (charitable funding mechanism, especially for legal aid) IOM- Iowa, Ohio, Michigan (soybean origin),Institute of Medicine,International Organisation for Migration,Isle of Man IONA - Islands of the North Atlantic (alternate name for Great Britain, Ireland, the Isle of Man, and related islands) IOT - British Indian Ocean Territory (ISO 3166 trigram) IOU - "I Owe You" (Promissory note) IP - Clipperton Island (FIPS 10-4 territory code) - Initial Point - Intellectual Property - Internet Protocol IPA - India Pale Ale - International Phonetic Alphabet - Isopropyl alcohol IPB - Intelligence Preparation of the Battlefield IPCC - Intergovernmental Panel on Climate Change - Independent Police Complaints Commission ipk - Inupiaq language (ISO 639-2 code) IPL - Inferior Parietal Lobule IPN - Instytut Pamieci Narodowej (Polish, "Institute for National Memory") IPO - Initial Public Offering IPR - In Progress Review - Intellectual Property Rights - Intelligence Production Requirement IPT - Integrated Product/Project Team IPTS - Institute for Prospective Technological Studies IPTV - Internet Protocol TeleVision IPW - Interrogation of Prisoners of War iq - idem quod (Latin, "the same as") IQ - Intelligence Quotient - Iraq (ISO 3166 digram) IQD - Iraqi dinar (ISO 4217 currency code) Ir - Iridium IR - Infrared - Intelligence requirement (military) - Iran (FIPS 10-4 country code; ISO 3166 digram) - Iran Air (IATA alpha code) see entry for more IRA - Individual Retirement Account - Irish Republican Army (see also List of organisations known as the Irish Republican Army for groups claiming descent from this organisation) IRAD - Internal Research and Development IRAN - (I) Inspect and Repair As Necessary IRAS - Infrared Astronomical Satellite IRB - International Rugby Board IRBM - Intermediate Range Ballistic Missile IRC - International Red Cross - International Reply Coupon - Internet Relay Chat IREA - Intermountain Rural Electric Association IRL - Ireland (ISO 3166 trigram) - Industrial Research Limited - Indy Racing League - In real life IRM - Illinois Railway Museum - Inzhenernaya Razvedyvatelnaya Mashina (Russian Инженерная Разведывательная Машина, "Engineer Reconnaissance Vehicle") † IRN - Iran (ISO 3166 trigram) IRINN - Islamic Republic of Iran News Network IRO - International Refugee Organisation IRQ - Iraq (ISO 3166 trigram) IRR - Iranian rial (ISO 4217 currency code) IRS - U.S. Internal Revenue Service IRSN - Institut de radioprotection et de sûreté nucléaire (French, "Institute for Radiation Protection and Nuclear Safety") IRST - Infra-red Search and Track is - Icelandic language (ISO 639-1 code) IS- Iceland (ISO 3166 digram),Israel (FIPS 10-4 country code) ISA- Individual Savings Account,Industry Standard Architecture,Instruction Set Architecture,International Seabed Authority ISAAA - International Service for the Acquisition of Agri-biotech Applications ISAF- International Sailing Federation,International Security Assistance Force ISAR - Inverse SAR (Synthetic Aperture Radar) ISB - Intermediate Staging Base ISBN - International Standard Book Number (ISO 2108) ISCCP - International Satellite Cloud Climatology Project ISCII - Indian Standard Code for Information Interchange ISDN - Integrated Services Digital Network ISEF - Intel International Science and Engineering Fair ISEN - Internet Search Environment Number ISF - Internal Security Force ISI-Indian Standards Institute, former name of the Bureau of Indian Standards,Inter-Services Intelligence (Pakistan),Islamic State of Iraq, an umbrella organization for several Iraqi insurgent groups ISIL - (i/a) Islamic State of Iraq and the Levant ISIS-(i/a) Institute for Science and International Security,Islamic State of Iraq and Syria ISK - Icelandic krona (ISO 4217 currency code) isl - Icelandic language (ISO 639-2 code) ISL - Iceland (ISO 3166 trigram) ISLN - International Standard Lawyer Number (used initially by LexisNexis Martindale-Hubbell) ISM- Industrial, scientific or medical, Interstellar medium ISMB - International Society of Matrix Biologists ISMC - Intelligent Sounding Meaningless Conversation ISO- In Search Of, International Organization for Standardization (from the Greek ίσος, isos, meaning "equal") ISOGP - Indian Society of Orthodontics for General Practitioners [2] ISP- International Standardized Profile,Internet Service Provider,Information Systems Professional ISPE - (a/i) International Society for Pharmacoepidemiology ISR- Intelligence, Surveillance and Reconnaissance, Israel (ISO 3166 trigram) ISRO - Indian Space Research Organisation ISS- International Shorebird Survey (North America),International Space Station ISSCR - International Society for Stem Cell Research ISSN - International standard serial number (ISO 3297) IST- Information System Technology,UCF Institute for Simulation and Training ISTAR - Intelligence, Surveillance, Target Acquisition, and Reconnaissance ISTC - Institute of Scientific and Technical Communications (UK) ISTS - Intel Science Talent Search ISU- Integrated Sight Unit,International Skating Union,IT[edit] it - Italian language (ISO 639-1 code) IT- InferoTemporal (neurophysiology),Information Technology, Italy (FIPS 10-4 country code; ISO 3166 digram) ita - Italian language (ISO 639-2 code) ITA - Italy (ISO 3166 trigram) ITAG - Inertial Terrain-Aided Guidance ITALY - I'll Truly Always Love You ITAS - Improved Target Acquisition Sight ITC - InferoTemporal Cortex (neurophysiology) ITCZ - (i/p) Intertropical Convergence Zone ITEC - Information Technology Exposition & Conference ITEMS - Interactive Tactical Environment Management System ITER - International Thermonuclear Experimental Reactor ITF - International Tennis Federation ITK - In The Know ITN - Independent Television News (British) ITS- Incompatible Time-sharing System,Individual Training Standards ITT - International Telephone and Telegraph (U.S.) ITTO - International Tropical Timber Organization ITU- Intent-to-Use,International Telecommunication Union (International Telegraph Union 1865-1932),IU[edit] iu - Inuktitut language (ISO 639-1 code) IUCN - International Union for the Conservation of Nature and Natural Resources (World Conservation Union) IUPAC - International Union of Pure and Applied Chemistry (pronounced "eye-yoo-pac") IUSS - Integrated Undersea Surveillance System - Integrated Unit Simulation System - International Union of Soil Sciences IV - Côte d'Ivoire (FIPS 10-4 country code; from Ivory Coast) - Four (in Roman numerals) - IntraVenous (as in intravenous drip or intravenous therapy) IVD - Internet Video Device, intra vas device Iveco - Industrial Vehicles Corporation IVF - In Vitro Fertilisation IVI - Interchangeable Virtual Instrument IVIS - (i/a) Inter-Vehicle Information System IVL - Inter-Visibility Line IVM - In Vitro [Oocyte] Maturation IVO - In Vicinity Of IW - Information Warfare IWARS - Infantry Warrior Simulation IWC - International Whaling Commission IWW - Industrial Workers of the World IX - Nine (in Roman numerals) IXT - IntraText digital library; IntraText lexical hypertext IY - Saudi-Iraqi neutral zone (FIPS 10-4 territory code; obsolete 1993) IZ - Iraq (FIPS 10-4 country code) J - Joule J1 - Joint [Manpower &] Personnel Directorate J2 - Joint Intelligence Directorate J2EE - Java 2 Platform, Enterprise ion J2ME - Java 2 Platform, Micro ion J2SE - Java 2 Platform, Standard ion J3 - Joint Operations Directorate J4 - Joint Logistics Directorate J5 - Joint Strategic Plans & Policy Directorate J6 - Joint Information Technology Directorate (Command, Control, Communications & Computer Systems) J7 - Joint Operational Plans & Interoperability Directorate J8 - Joint Force Structure, Resources, & Assessment Directorate J9 - Joint Public Affairs Directorate (Civilian-Military Cooperation) ja - Japanese language (ISO 639-1 code) JA - Japan (FIPS 10-4 country code) JAFT - Just A Field Test JAG - Judge Advocate General Corps (military law) JAL - Japan Airlines JALLC - Joint Analysis and Lessons Learned Centre (NATO) JAM - Jamaica (ISO 3166 trigram) JAMA - Journal of the American Medical Association JANET - Joint Academic Network JANUS - Joint Academic Network Using Satellites (UK) - Joint Army Navy Uniform Simulation - Joint Army-Navy Staff - Just ANother Useless Simulation (Note: The U.S. Army Janus simulation is not an acronym) JATO - Jet-Assisted Take-Off jav - Javanese language (ISO 639-2 code) JB - Junior Branch JB - Jail Bait JBFSA - Joint Blue Force Situational Awareness JCATS - Joint Conflict And Tactical Simulation ("djay-catts") JCDB - Joint Common Data Base JCDS - Joint Chiefs of the Defence Staff JCIDS - Joint Capabilities Integration and Development System JCIET - Joint Combat Identification Evaluation Team JCL - Job Control Language JCMOTF - Joint Civil-Military Operations Task Force JCP - Java Community Process JCPM - Java Child Process Manager - Jesus Christ Prison Ministry JCS - Joint Chiefs of Staff JCW - Juggalo Championship Wrestling JD- Jack Daniel's (whiskey),Julian day,Juris Doctor (Latin, "doctor of jurisprudence") JDAM - (a/i) Joint Direct Attack Munition ("djay-dam") JDBC - Java Data Base Connectivity JDCC - UK Joint Doctrine and Concepts Centre, now the Development, Concepts, and Doctrine Centre, DCDC JDEM - Joint Dark Energy Mission JDK - Java Development Kit JDL - Jewish Defense League JDM- Japanese domestic market, referring specifically to automobiles and parts,Java Data Mining,Joint design manufacturing,JE[edit] JE - Jersey (FIPS 10-4 territory code) JEB- James Ewell Brown (Stuart),John Ellis Bush JEDP - Jahwist, Elohist, Deuteronomist, Priestly (according to the documentary hypothesis, the sources of the Torah) JEE - Java Platform, Enterprise ion JEFX - Joint Expeditionary Force eXperiment JEPD- Jahwist, Elohist, Priestly, Deuteronomist,Jointly Exhaustive, Pairwise Disjoint JET - Joint European Torus JEZ - Joint Engagement Zone JFACC - Joint Force Air Component Commander JFACTSU - U.S. Joint Forward Air Control Training and Standards Unit JFC - Joint Force Commander JFCOM - U.S. Joint Forces Command ("jiff-comm") JFET - (i/a) Junction Field-Effect Transistor ("jay-fett") JFK - John Fitzgerald Kennedy or the airport named after him. JFLCC - Joint Force Land Component Commander JFMCC - Joint Force Maritime Component Commander JFO - Journal of Field Ornithology JFSOCC - Joint Force Special Operations Component Commander JFTX - Joint Field Training Exercise JH - Japan Highway Public Corporation JH - Jharkhand (Indian state code) JI - Joint Implementation JIB - Joint Information Bureau JIC - Joint Intelligence Centre JINI - Java Intelligent Network Infrastructure JITC - Joint Interoperability Test Command JIVE - Joint Institute for VLBI (Very Long Baseline Interferometry) in Europe JJAP - Japanese Journal of Applied Physics JK - Jedi Knight - Just Kidding - Spanair (IATA airline designator) - Jammu & Kashmir (Indian state code) JL - Japan Airlines (IATA airline designator) JLA - Justice League of America JM - Jamaica (FIPS 10-4 country code; ISO 3166 digram) JMD - Jamaican dollar (ISO 4217 currency code) JMS - Java Message Service JN - Jan Mayen Island (FIPS 10-4 territory code) JNI - Java Native Interface JNLP - Java Network Launch Protocol JO - Jordan (FIPS 10-4 country code; ISO 3166 digram) JOA - (a/i) Joint Operations Area JOD - Jordanian dinar (ISO 4217 currency code) Jofa - Jonssons fabriker (Swedish, "Jonsson's Factories") JOPES - Joint Operations Planning and Execution System JOR - Jordan (ISO 3166 trigram) JOTS - Joint Operations Tactical System JSP - Joint Services Publication JP - Japan (ISO 3166 digram) - Justice of the Peace JPEG - Joint Photographic Experts Group ("djay-peg") JPL - Jet Propulsion Laboratory jpn - Japanese language (ISO 639-2 code) JPN - Japan (ISO 3166 trigram) JPOW - Joint Project Optic Windmill JPY - Japanese yen (ISO 4217 currency code) JQ - Jetstar Airways (IATA airline designator) - Johnny Quick - Johnston Atoll (FIPS 10-4 territory code) - Jonny Quest - Joshua Quagmire JRA - Japanese Red Army - Joint Rear Area JRDF - Joint Rapid Deployment Forces JRE - Java Runtime Environment JREF - James Randi Educational Foundation JROC - Joint Requirements Oversight Council JROCM - JROC Memorandum JRRF - Joint Rapid Reaction Force JRSAI - Journal of the Royal Society of Antiquaries of Ireland JSAF - Joint Semi-Automated Forces ("jay-saff") JSAP - Japan Society of Applied Physics JSCSC - Joint Services Command and Staff College JSD - juris scientiae doctor (Latin, "doctor of science of law") JSEAD - Joint Suppression of Enemy Air Defence (see SEAD) JSF - Joint Strike Fighter JSIMS - Joint Simulation System JSOA - Joint Special Operations Area JSOTF - Joint Special Operations Task Force JSP - JavaServer Page JSR - Java Specification Request JSS - Joint Support Ship Project JSTARS - Joint Surveillance Target Attack Radar System ("djay-starz") JT - Johnston Atoll (ISO 3166 digram; obsolete 1986) - Junior Technician (RAF) JTAG - Joint Test Action Group ("djay-tag") JTAGS - Joint Tactical Ground Station ("djay-tagz") JTC - Joint Training Confederation JTF - Joint Task Force JTFEX - Joint Task Force Exercise JTIDS - Joint Tactical Information Distribution System ("djay-tidz") JTLS - Joint Theater Level Simulation JTMD - Joint Theatre Missile Defence JTN - Johnston Atoll (ISO 3166 trigram; obsolete 1986) JTRS - (a/i) Joint Tactical Radio System ("jitters") JU - Juan de Nova Island (FIPS 10-4 territory code) JUGFET - JUnction Gate Field-Effect Transistor JUICE - JUpiter ICy Moon Explorer JUO - Joint Urban Operations jv - Javanese language (ISO 639-1 code) JV - Joint Venture - Junior Varsity JVM - Java Virtual Machine JW - Jehovah's Witnesses JWARS - Joint Warfare System (simulation) JWP - Joint Warfare Publication JWST - James Webb Space Telescope JY - Japanese Yen JZ - Joint Zone k - Kilo- K - Kelvin - Potassium (Latin Kalium) - Tanker (aircraft designation code) K9 - Canine Police Unit ka - Georgian language (ISO 639-1 code) kA - Kiloampere Ka - Kamov Design Bureau KA - Knowledge Acquisition - Karnataka (Indian state code) KAF - (i/a) Kandahar Air Field kal - Kalaallisut language (ISO 639-2 code) kan - Kannada language (ISO 639-2 code) KANUKOKA - Kalaallit Nunaanni Kommunit Kattuffiannit (Kalaallisut, "Greenlandic Communities Association") KARNAC - Knowledge Aided Retrieval in Activity Context KARR - Knight Automated Roving Robot (Knight Rider character) kas - Kashmiri language (ISO 639-2 code) kat - Georgian language (ISO 639-2 code) KATUSA - Korean Augmentation To United States Army kau - Kanuri language (ISO 639-2 code) kaz - Kazakh language (ISO 639-2 code) KAZ - Kazakhstan (ISO 3166 trigram) KBE - Knight Commander of the Order of the British Empire KBO - Kuiper Belt Object KBVB - Koninklijke Belgische Voetbalbond (Dutch for Royal Belgian Football Association) kC - Kilocoulomb KCK- Kansas City, Kansas,Koma Civakên Kurdistan (Kurdish, "Union of Communities in Kurdistan") KCL - King's College London KCMO - Kansas City, Missouri (pronounced "K-C-Moe") KCS - Kansas City Southern Railway (AAR reporting mark) KD - Kawasaki Disease - Kraft Dinner KE- Kenya (FIPS 10-4 country code; ISO 3166 digram), Kinetic Energy,Knowledge Engineering KEDO - Korean Peninsula Energy Development Organization KEN - Kenya (ISO 3166 trigram) KERA - Kentucky Education Reform Act (of 1990) kerma - Kinetic Energy Released in MAterial / in MAtter / per unit MAss KES- Kenyan shilling (ISO 4217 currency code), Killer Elite Squad (Japanese professional wrestling stable) KESR - Kent and East Sussex Railway. KET- Kentucky Educational Television, Key English Test,KF[edit] kF - Kilofarad KFC - Kentucky Fried Chicken KFOR - UN Kosovo Force KFUPM - King Fahd University of Petroleum & Minerals kg - Kilogram - Kongo language (ISO 639-1 code) KG - Kyrgyzstan (FIPS 10-4 country code; ISO 3166 digram) KGB - Komitet Gosudarstvennoy Bezopasnosti (Russian "Committee for State Security") (1954-1991) KGO - Knight of the Guelphic Order of Hanover KGS - Kyrgyz som (ISO 4217 currency code) KGZ - Kyrgyzstan (ISO 3166 trigram) kH - Kilohenry KH - Cambodia (ISO 3166 digram) khm - Khmer language (ISO 639-2 code) KHL - Kontinental Hockey League KHM - Cambodia (ISO 3166 trigram) KHR - Cambodian riel (ISO 4217 currency code) KHz - Kilohertz ki - Gikuyu language (ISO 639-1 code) Ki - Kibi KI - Kiribati (ISO 3166 digram) KIA - Killed In Action KIDS - Knowledge-based Integrated Design System kik - Gikuyu language (ISO 639-2 code), common typo for LOL kin - Kinyarwanda language (ISO 639-2 code) kir - Kyrgyz language (ISO 639-2 code) KIR - Kiribati (ISO 3166 trigram) KISS - Keep It Simple, Stupid / Keep It Short and Simple - Korean Intelligence Support System KITECH - Korean Institute of Industrial Technology KITT - Knight Industries Two Thousand - Knight Industries Three Thousand KIT - Keep In Touch kj - Kuanyama language (ISO 639-1 code) kJ - Kilojoule kk - Kazakh language (ISO 639-1 code) kK - Kilokelvin KK- Kabushiki kaisha (Japanese for "Stock Company", found in the legal names of countless Japanese corporations),Košarkarski klub (Slovenian), Košarkaški Klub (Croatian and Serbian in Latin script), Кошаркашки клуб (Serbian Cyrillic), Krepšinio Klubas (Lithuanian); all mean "Basketball Club", as in KK Union Olimpija, KK Cibona, KK Partizan, and KK Atletas KKK - Ku Klux Klan kl - Kalaallisut language (ISO 639-1 code) kL - Kilolitre KL - Kuala Lumpur - Kerala (Indian state code) KLENOT - KLEť Observatory Near Earth and Other unusual objects observations Team and Telescope KLM - Koninklijke Luchtvaart Maatschappij (Dutch "Royal Dutch Airlines") KLOC - Kilo Lines Of Code KLS- Kleine-Levin syndrome,Košarkaška liga Srbije (Latin) or Кошаркашка лига Србије (Cyrillic) (Serbian, "Basketball League of Serbia"),Kuala Lumpur Sentral,KM[edit] km - Khmer language (ISO 639-1 code) - Kilometre KM - Comoros - Knowledge Management KMF - Comoro franc (ISO 4217 currency code) KMFDM - Kein mitleid für die mehrheit (German "No pity for the majority" music band) KMR - Kwajalein Missile Range kn - Kannada language (ISO 639-1 code) kN - Kilonewton KN - Democratic People's Republic of Korea (FIPS 10-4 country code) - Saint Kitts and Nevis (ISO 3166 digram) KNA - Saint Kitts and Nevis (ISO 3166 trigram) KNVB - Koninklijke Nederlandse Voetbal Bond (Dutch for Royal Dutch Football Association) ko - Korean language (ISO 639-1 code) KO - Knocked Out kom - Komi language (ISO 639-2 code) kon - Kongo language (ISO 639-2 code) kor - Korean language (ISO 639-2 code) KOR - Republic of Korea (ISO 3166 trigram) KP - Kim Possible KPMG - Klynveld, Peat, Marwick, Goerdeler KPNO - Kitt Peak National Observatory KPV - Krupnokaliberniy Pulemet Vladimorova (Russian КПВТ Крупнокалиберный Пулемет Владимирова, "Large-Calibre Machinegun Vladimirov")[1] KPVT - Krupnokaliberniy Pulemet Vladimorova Tankoviy (Russian КПВТ Крупнокалиберный Пулемет Владимирова Танковый, "Large-Calibre Machinegun Vladimirov Tank")[2] KPW - North Korean won (ISO 4217 currency code) KQ - Kenya Airways (IATA airline designator) - Kingman Reef (FIPS 10-4 territory code) kr - Kanuri language (ISO 639-1 code) Kr - Krypton KR - Kiribati (FIPS 10-4 country code) - Republic of Korea (ISO 3166 digram) KRW - South Korean won (ISO 4217 currency code) ks- Kashmiri language (ISO 639-1 code),Kilosecond kS - Kilosiemens KS- Kansas (postal symbol),Republic of Korea (FIPS 10-4 country code) KSC - Kennedy Space Center KSI - Killed or Seriously Injured KSM- Korean Service Medal,Khalid Sheikh Mohammed KSU - Kansas State University kT - Kilotesla KT - Christmas Island (FIPS 10-4 territory code) - Knight of the Order of the Thistle - Knights Templar KTS - Knight of the Tower and Sword (of Portugal) ku - Kurdish language (ISO 639-1 code) KU - Kuwait (FIPS 10-4 country code) kua - Kuanyama language (ISO 639-2 code) KUL - Katholieke Universiteit Leuven (Flemish, Catholic University of Leuven) kur - Kurdish language (ISO 639-2 code) KUW - Kuwait (UNDP country code, IOC and FIFA trigram, but not ISO 3166) kv - Komi language (ISO 639-1 code) kV - Kilovolt KV - Kosovo KV - Kavminvodyavia (IATA airline designator) - Kendriya Vidhyalaya (Indian school) - Kliment Voroshilov (tanks) - Köchel-Verzeichnis (Mozart catalogue) - Valley of the Kings (originally "Kings' Valley") KVM - Keyboard, Video, Mouse switch KVT - Killer-Victim Table (military simulations) kw - Cornish language (ISO 639-1 code) kW - Kilowatt KW - Kuwait (ISO 3166 digram) KWB - Kids' WB! KWD - Kuwaiti dinar (ISO 4217 currency code) KWT - Kuwait (ISO 3166 trigram) KX - Cayman Airways (IATA airline designator) ky - Kyrgyz language (ISO 639-1 code) KY- Cayman Islands (ISO 3166 digram),Kentucky (postal symbol) KYD - Cayman Islands dollar (ISO 4217 currency code) KZ - Kazakhstan (FIPS 10-4 country code; ISO 3166 digram) KZN - KwaZulu-Natal KZT - Kazakh tenge (ISO 4217 currency code) L - Fifty (in Roman numerals) - Label - Lap - Large - Laser (US military aircraft basic mission designation) - Latin - Left - Litre - Low (transmissions) la - Latin language (ISO 639-1 code) La - Lanthanum LA- Laos (FIPS 10-4 country code; ISO 3166 digram),Louisiana (postal symbol), Los Angeles LAAS- Local Area Augmentation System,Los Angeles Astronomical Society LAB - Logistics Assault Base LabVIEW - Laboratory Virtual Instrumentation Engineering Workbench LACMA - (a/i) Los Angeles County Museum of Art LAD - Laser Aiming Device LADW - Local Air Defence Warning LAESI - Local Authority & Emergency Service Information LAK - Laotian kip (ISO 4217 currency code) LAMP - (multiple meanings) LAN - Local Area Network LANL - Los Alamos National Laboratory lao - Lao language (ISO 639-2 code) LAO - Laos (ISO 3166 trigram) LAPD - Los Angeles Police Department LAR- Light Armoured Reconnaissance,Logistics Assistance Representative LARC - Livermore Advanced Research Computer (cf. LLNL) LARP - Live-Action Role-Playing LAS - McCarran International Airport (Las Vegas, Nevada) Laser - Light Amplification by Stimulated Emission of Radiation (cf. Maser) lat - Latin language (ISO 639-2 code) LAT-(i/a) Lowest Astronomical Tide (nautical charts),Licensed Athletic Trainer (used in many of the United States; see www.oata.org) LATA - Local Access Transport Area LATCH - Lower Anchors and Tethers for Children (U.S. standard for attachment points for child safety seats in passenger cars) lav - Latvian language (ISO 639-2 code) LAV- Land Assault Vehicle,Light Armoured Vehicle,Lymphadenopathy-Associated Virus LAW - Light Antitank Weapon LAX- Los Angeles International Airport, The Latin American Xchange (professional wrestling),LB[edit] lb- pound (Latin librum),Luxembourgish language (ISO 639-1 code) LB - Lebanon (ISO 3166 digram) LBH- Light Battlefield Helicopter,Lyman-Birge-Hopfield bands LBJ- Lady Bird Johnson,LeBron James,Light Bulb Joke,Little Beagle Johnson (the dog owned by Lyndon and Lady Bird Johnson),Lyndon Baines Johnson LBN - Lebanon (ISO 3166 trigram) LBNL - Lawrence Berkeley National Laboratory LBP - Lebanese pound (ISO 4217 currency code) LBR - Liberia (ISO 3166 trigram) LBS - Location-Based Services lbs - pounds (plural form of lb, see above) LBT - Large Binocular Telescope LBW - Leg Before Wicket LBY - Libya (ISO 3166 trigram) LC - Line of Contact - Saint Lucia (ISO 3166 digram) LCA - Saint Lucia (ISO 3166 trigram) LCC - Land Component Commander LCCP - Light Contingency Communications Package LCD - Liquid Crystal Display LCE - Leaving Certificate Examination - Load Carrying Equipment - London Commodity Exchange LCM - Least/Lowest Common Multiple LCol - Lieutenant-Colonel (Canada, UK) LCS - League of Legends Championship Series LD- Laser Designator,Limited Deployment,Line of Departure LDA - Lateral Drift Apparatus (paratroops) LDAP - (a/i) Lightweight Directory Access Protocol (pronounced "ell-dap") LDC - Lesser Developing/Developed Country LDL - Low-Density Lipoprotein LDMOS - (i/a) Laterally diffused MOS transistor ("ell-dee-moss") LDS- Latter-day Saint (also "Latter Day Saint"); also used as an abbreviation by The Church of Jesus Christ of Latter-day Saints,Liberal Democracy of Slovenia LDV - Local Defence Volunteers (British Home Guard) LDW - Lane Departure Warning (ADAS) LE - Lebanon (FIPS 10-4 country code) LEC - Local Exchange Carrier LED - Light-Emitting Diode Legs - level emotion gad speed LEGAD - Legal Advice LEMOSS - Long-Endurance MObile Submarine Simulator LEN - Large Extension Node LEO - Low Earth orbit LEP - Large Electron-Positron collider LER - Loss-Exchange Ratio LEU - Low-Enriched Uranium LF - Low Frequency LFO - Low Frequency Oscillation / Oscillator LFTR - Liquid fluoride thorium reactor lg - Luganda (ISO 639-1 code) LG - Latvia (FIPS 10-4 country code) LGB- Lesbian, Gay, Bisexual,Laser-guided bomb, self-explanatory LGBT - Lesbian, Gay, Bisexual, Transgender LGLO - Love God, Love Others LGM - Little Green Men LGS - Landsat Ground Station LH - Lithuania (FIPS 10-4 country code) - Luteinising Hormone LHC - Large Hadron Collider LHD- litterarum humaniorum doctor (Latin, "doctor of humane letters (humanities)"),Left-Hand Drive (automobile) LHS - Left Hand Side li - Limburgish language (ISO 639-1 code) Li - Lithium LI - Fifty-one (in Roman numerals) - Liberia (FIPS 10-4 country code) - Liechtenstein (ISO 3166 digram) LIBOR - London Interbank Offered Rate LIBS - Laser Induced Breakdown Spectroscopy LIE - Liechtenstein (ISO 3166 trigram) LIFO - Last In, First Out LIGO - Laser Interferometer Gravitational-Wave Observatory lim - Limburgish language (ISO 639-2 code) lin - Lingala language (ISO 639-2 code) LINEAR - Lincoln Near-Earth Asteroid Research LISA - Laser Interferometer Space Antenna lit - Lithuanian language (ISO 639-2 code) LITAS - Low Intensity Two Colour Approach System (aviation) LIVE - Liquid Inertial Vibration Eliminator LJ- La Jolla,Larry Johnson (both the American football and basketball players of that name),LaserJet (HP printer brand),Library Journal,Linux Journal,LiveJournal,Ljubljana,Lord Justice of Appeal, Sierra National Airlines (IATA code) LJJ - Lord Justices of Appeal LK - Sri Lanka (ISO 3166 digram) LKA - Sri Lanka (ISO 3166 trigram) LKL - Lietuvos krepšinio lyga (Lithuanian, "Lithuanian Basketball League") LKR - Sri Lanka rupee (ISO 4217 currency code) LKR4 - Linkwitz-Riley 4th order (audio crossover type) LL - Land Line (telephone) - Last Log - Late Latin - Left Limit - Lex Luthor (Superman character) - Light Line - Limited Liability - Linked List - Little League LLAD - Low Level Air Defence LLB - Legum Baccalaureus (Latin: Bachelor of Laws) LLC - Limited Liability Company LLGC - Llyfrgell Genedlaethol Cymru (National Library of Wales) - London Lesbian and Gay Centre LLLTV - Low-Light Level Television LLNL - Lawrence Livermore National Laboratory LLP - Limited Liability Partnership LLTI - Limiting Long-Term Illness - Long Lead Time Item LLTR - Low-Level Transit Route LMAO - Laughing My Ass Off (Internet shorthand) LMFAO - Laughing My F**king Ass Off (Internet shorthand, electro-hop duo) LMB - Lick My Balls LMN - (a/i) Lifetime Movie Network LMS - London Mathematical Society - London, Midland and Scottish (Railway) LMS - Like My Status (Internet shorthand) LMV - () Light Motor Vehicle ln- Lingala language (ISO 639-1 code),Natural logarithm LNB- Liga Nacional de Básquet (Rioplatense Spanish, "National Basketball League"; top Argentine league),Ligue Nationale de Basketball (French, "National Basketball League"; the organization that operates France's top two leagues, and the unrelated top league of Switzerland),Low-Noise Block (Satellite dish) LNER - London and North Eastern Railway LNG - Liquefied Natural Gas LNO - Liaison Officer LNR - Ligue Nationale de Rugby (French, "National Rugby League") lo - Lao language (ISO 639-1 code) LO - Slovakia (FIPS 10-4 country code) LOA - Limit Of Advance LOC - (a/i) Level of Operational Capability - Limited Operational Capability - Lines Of Code - Lines Of Communication - see entry LOD - Limit of Detection - see Detection limit LoD - Lines of Development (UK) LOFAR - Low Frequency Analysis and Recording LOGPAC - Logistics Package LOL - Laughing Out Loud (Internet shorthand) LOMEZ - Low Altitude Missile Engagement Zone LONEOS - Lowell Observatory Near-Earth-Object Search LOOGY - (p/a) Lefty One-Out GuY, a sometimes pejorative nickname for the left-handed specialist in baseball loq - loquitur (Latin, " he speaks") LORTID - LOng Range Target IDentification LOS - Line Of Sight LOSAT - Line-Of-Sight Anti-Tank (missile) LOTA - Licentiate of the Orthodontic Technicians Association LOTIS - Livermore Optical Transient Imaging System LOTS - Logistics Over-The-Shore LP - Linkin Park - Linkup Point - Listening Post - Long Playing record - Louisiana Pacific (cf. LP Field) LPC - Linear Predictive Coding LPD - Landing Platform Dock (Navy hull classification) - Low Probability of Detection LPG - Liquefied Petroleum Gas (cf. LNG) LPI - Low Probability of Intercept LPS - Landsat Processing System - LipoPolySaccharide LQ - Palmyra Atoll (FIPS 10-4 territory code) Lr - Lawrencium LR - Liberia (ISO 3166 digram) LRAD - Long Range Acoustic Device ("ell-rad") LRC - Logistics iness Center LRD - Liberian dollar (ISO 4217 currency code) LRF - Laser rangefinder - Low iness Forces LRGW - Long-Range Guided Weapon LRICBM - Limited Range ICBM LRIP - Low Rate Initial Production LRP - Logistics Release Point LRPE - Long-Range Planning Element LRS - Long Range Surveillance LRU - Line-Replaceable Unit LS- Landing Support, Lesotho (ISO 3166 digram),Liechtenstein (FIPS 10-4 country code), locus sigilli (Latin, "place of the seal") LSAT - Law School Admission Test (often pronounced as "el-SAT") LSD- Landing Ship, Dock (Navy hull classification),librae, solidii, denarii (Latin: Pounds, shillings and pence),lyserg-saüre-dietylamid (German "lysergic acid diethylamide") LSE- Least Squares Estimate/Error,London School of Economics,London Stock Exchange LSI - Large-Scale Integration LSIF - Labour Sponsored Investment Fund LSL - Lesotho loti (ISO 4217 currency code) LSND - Liquid Scintillator Neutrino Detector LSO - Lesotho (ISO 3166 trigram) LSST - Large Synoptic Survey Telescope LST - Landing Ship, Tank (World War II; also known, not entirely affectionately, as "Large Slow Target") LSVW - Light Support Vehicle, Wheeled lt - Lithuanian language (ISO 639-1 code) Lt - Lieutenant LtC - Lieutenant-Colonel (U.S.) LT - Lesotho (FIPS 10-4 country code) - Lithuania (ISO 3166 digram) LTC - Long-Term Costing Ltd - Limited LTDP - Long-Term Defence Plan LTG - Lieutenant General - Lightning (METAR Code) LTI - Linear Time-Invariant LTM - Acronym for Laughing To Myself LTL - Lithuanian litas (ISO 4217 currency code) LTP - Long-Term Potentiation LTU - Lithuania (ISO 3166 trigram) ltz - Luxembourgish language (ISO 639-2 code) lu - Tshiluba language (ISO 639-1 code) Lu - Lutetium LU - Acronym Love You LU - Loonatics Unleashed lub - Tshiluba language (ISO 639-2 code) LUCA - Last Universal Common Ancestor lug - Luganda (ISO 639-2 code) LUG - Linux User Group LULU - Locally Unwanted Land Use (urbanism) LUT - Limited User Test (ing) - Local User Terminal LUVW - Light Utility Vehicle, Wheeled LUX - Luxembourg (ISO 3166 trigram) lv - Latvian language (ISO 639-1 code) LV- Las Vegas, Latvia (ISO 3166 digram), Launch Vehicle,Leading Vehicle, Leave, Left Ventricle,Level Valve,Linking Verb,Liverpool Victoria LVA - Latvia (ISO 3166 trigram) LVAD- Left Ventricular Assist Device, Low-Velocity Airdrop LVEF - Left Ventricular Ejection Fraction LVL - Latvian lats (ISO 4217 currency code) Lw - Lawrencium (obsolete 1963) LW - Land Warrior - Low Water (nautical charts) LWR - Laser warning receiver LWRC - Land Warfare Resources Corporation LWS - Land Warrior System LX - Luxembourg (amateur radio ITU prefix) - Swiss International Air Lines (IATA code) LX - Electrics (theatrical term) LY - Libya (FIPS 10-4 country code; ISO 3166 digram) - Lithuania (amateur radio ITU prefix) LYAO - Laugh Your Ass Off LYD - Libyan dinar (ISO 4217 currency code) LYLAS - Love You Like A Sister LZ - Bulgaria (amateur radio ITU prefix) - Landing Zone m - Metre - Milli M - Mega- - One thousand (in Roman numerals) mA - Milliampere Ma - Megaannum MA- Madagascar (FIPS 10-4 country code), Marijuana Anonymous, Master of Arts,Massachusetts (postal symbol),Megaampere,Morocco (ISO 3166 digram) MAA - Mathematical Association of America MAAC - Metro Atlantic Athletic Conference MAC- Macau (ISO 3166 trigram), U.S. Military Airlift Command (1966-1992),Mid-American Conference MACA - Military Aid to the Civil Authorities MACE - Multi-Agent Computing Environment MACHO - MAssive Compact Halo Object MAD- Magnetic Anomaly Detector, Moroccan dirham (ISO 4217 currency code), Mutual Assured Destruction MADD- Mothers Against Drunk Driving,MyoAdenylate Deaminase Deficiency, Multiply-Add MAF - Maintenance Action Form MAFF - Ministry of Agriculture, Forestry and Fisheries (various countries) MAGIC - Major Atmospheric Gamma-ray Imaging Cherenkov (telescope) MAGNETAR - Metaprogrammable AGent NETwork ARchitecture MAGTF - Marine Air-Ground Task Force mah - Marshallese language (ISO 639-2 code) Mahasz - Magyar Hanglemezkiadók Szövetsége (Hungarian, "Association of Hungarian Record Companies") mal - Malayalam language (ISO 639-2 code) MALD - Miniature Air-Launched Decoy MANPADS - MAN-Portable Air Defence System MANPRINT - MANpower and PeRsonnel INTegration MAO-(i/a) Molėtų astronomijos observatorija (Moletai Astronomical Observatory), MonoAmine Oxidase MAOI - Monoamine oxidase inhibitor MAPS - Monitoring Avian Productivity and Survivorship MAQS - Museum of the American Quilter's Society ("max") mar - Marathi language (ISO 639-2 code) MAR - Morocco (ISO 3166 trigram) MarBEF - Marine Biodiversity and Ecosystem Functioning MARC- MAchine able Cataloging (often also defined as MAchine able Code),Mailing list ARChive,Massachusetts Animal Rights Coalition,Mid-America Regional Council MARCENT - United States Marine Forces Central Command MARFORCC - Marine Force Component Commander MARRS - Martyn Young, Alex Ayuli, Rudy Tambala, Russell Smith, and Steve Young (British electronic music act) MAS - NATO Military Agency for Standardization MASAS - Monte Agliale Supernovae and Asteroid Survey Maser - Microwave Amplification by Stimulated Emission of Radiation MASH - Mobile Army Surgical Hospital MASINT - Measurement And Signature Intelligence MATREX - Modeling Architecture for Technology, Research & EXperimentation MATS - U.S. Military Air Transport Service (1948-1966) MAVS - (a/i) Mobile Artillery Vehicle System MAW - Malawi (IOC trigram, but not FIFA or ISO 3166) MAX - Meta-reasoning Architecture for "X" MB - Manitoba (postal symbol) - Martinique (FIPS 10-4 territory code) - Medal of Bravery (Canada) MBA - Main Battle Area - Main Belt Asteroid - Masters of Business Administration MBI - Moody Bible Institute MBBL - (U.S. Armor Center) Mounted Battlespace Battle Laboratory MBCC - Migratory Bird Conservation Commission (U.S.) MBCS - Multi-Byte Character Set MBE - Member of the Order of the British Empire - Multistate Bar Examination (U.S.) MBIDST - Member of the British Institute of Dental and Surgical Technologists MBM - Meat and Bone Meal mbsf - metres below sea floor,[1][2] a depth convention used in paleontology and oceanography MBT - Main Battle Tank MBTA - Massachusetts Bay Transportation Authority - Migratory Bird Treaty Act (U.S.) MBTI - Myers-Briggs Type Indicator mC - Millicoulomb MC- Macau (FIPS 10-4 territory code), Master of Ceremonies, Megacoulomb, Military Cross (bravery award), Monaco (ISO 3166 digram), Mortar Carrier, Eleven Hundred (in Roman numerals) MCA- Master of Computer Applications,Micro Channel Architecture,MultiChannel Analyzer,Music Corporation of America, the original name of the now-defunct MCA Inc. MCC- Marylebone Cricket Club,Mission Control Center,Motor Control Center,Movement Control Centre MCD- Minimal Cerebral Dysfunction,Minor civil division (U.S. Census term) MCDL - Model Composition Definition Language MCFT - Modified Compression Field Theory MCG - Melbourne Cricket Ground MCI - Microwave Communications, Inc. MCIS - Mellon Collie and the Infinite Sadness MCM - Mine Counter-Measures MCMV - Mine Counter-Measure Vessel MCNC- Microelectronics Center of North Carolina, Mixing Condensation Nucleus Counter MCO- Major Combat Operation, Monaco (ISO 3166 trigram), Movement Control Officer MCP- Maintenance Collection Point,Male Chauvinist Pig MCR - My Chemical Romance MCSF - Marine Corps Security Forces MCT - Movement Control Team MCTIS - Mounted Co-operative Target Identification System MCU- Marine Corps University,Marvel Cinematic Universe,Medium close-up (camera direction in British TV scripts), Microcontroller unit, Milk clotting units,Ming Chuan University,Minimum coded unit (digital imaging),Multipoint control unit,Municipal Credit Union (New York),MD[edit] Md - Mendelevium MD- Fifteen Hundred (in Roman numerals),Maryland (postal symbol), Medicinae Doctor (Doctor of Medicine/Medical Doctor),Mentioned in Dispatches (military), Moldova (FIPS 10-4 country code; ISO 3166 digram) MDA- Main Defensive Action/Area, Moldova (ISO 3166 trigram) - Muscular Dystrophy Association MDF- Main distribution frame,Medium-density fiberboard MDG- Madagascar (ISO 3166 trigram), UN Millennium Development Goal MDL - Moldovan leu (ISO 4217 currency code) MDM- Michigan Dartmouth MIT telescope consortium,Master data management MDMA - MethyleneDioxy-MethylAmphetamine (also known as "Ecstasy") MDNA - Madonna's 12th studio album title (2012) MDO - Membership Driven Organisation MDP - Markov Decision Process MDT - Mountain Daylight Time (UTC-6 hours) MDV - Maldives (ISO 3166 trigram) MDW- Chicago Midway International Airport in Chicago (IATA airport code), Military District of Washington, Minnesota, Dakota and Western Railway (AAR reporting mark),ME[edit] Me - Messerschmitt ME - Maine (postal symbol) - Mechanical engineer[ing] - Medical examiner - Middle East - Middle East Airlines (IATA code) - Memory Effect - Myalgic Encephalomyelitis MEA - Maine Educational Assessment - Middle East Airlines - Millennium Ecosystem Assessment - Minimum en route altitude - Mono-ethanol Amine - Multilateral Environmental Agreement MEAC - Mid-Eastern Athletic Conference (ME-ac) MEC- Maine Central Railroad,Manta, Ecuador (IATA location identifier), Model European Council,Mountain East Conference,Mountain Equipment Co-op MECC - Minnesota Educational Computing Consortium (later Corporation, dissolved 1999) MECCA - Milwaukee Exposition Convention Center and Arena, a former name for the sports venue now known as UW-Milwaukee Panther Arena MECO - Main engine cutoff (NASA code for point in Space Shuttle assent when three main engines are shut down prior to External Tank (ET) separation) MEDEVAC - Medical evacuation MEDLI - Mars Science Laboratory Entry, Descent, and Landing Instrumentation - Medical & Scientific Libraries of Long Island - Model for Effluent Disposal using Land Irrigation MEDS - Mission Essential Data Set MEF - U.S. Marine Expeditionary Force - Minimum essential facility - Mission essential force MEG - MagnetoEncephaloGraphy MEI - Matsushita Electric Industrial Co., Ltd. MEK - Magyar Elektronikus Konyvtar - Message encryption key - Methyl ethyl ketone - Mujahideen al-Khalq MEL - Maya Embedded Language - Michigan Electronic Library MELT - Metallic Line/Loop Test (ing) MEM - Message Exchange Mechanism - Microelectromechanical MEMS - Microelectromechanical System MEO - Medium earth orbit - Most efficient organization MEP - Mechanical Electrical Plumbing - Member of the European Parliament - Missions étrangères de Paris (French for "Paris Foreign Missions") - Model European Parliament MER - Mars Exploration Rover MERL - Mitsubishi Electric Research Laboratories MES - Marconi Electronic Systems - Medium Edison screw MESSENGER - MErcury Surface, Space ENvironment, GEochemistry and Ranging MET - Meteorological - Middle European Time METAR - [Meteorological] Aviation Routine weather report METL - (i/a) Mission Essential Task List ("mettle") METOC - Meteorological and Oceanographic MEU - U.S. Marine Expeditionary Unit - Maximum Expected Utility MeV - Megaelectronvolt MEV - Medical Evacuation Vehicle - Musica Elettronica Viva MEX - Mexico (ISO 3166 trigram) MEZ - Missile Engagement Zone MES - Manufacturing Execution Systems mF - Millifarad MF - Mayotte (FIPS 10-4 territory code) - Megafarad MFSB - Mother, Father, Sister, Brother (1970s Philadelphia studio musicians collective) mg - Malagasy language (ISO 639-1 code) - Milligram Mg - Magnesium - Megagram MG - Machine Gun - Madagascar (ISO 3166 digram) - Major General - Mongolia (FIPS 10-4 country code) - Morris Garage MGA - Malagasy ariary (ISO 4217 currency code) MGB - Medium Girder Bridge, Motor Gun Boat MGM - Metro Goldwyn Mayer - Montgomery, Alabama (Airport Code) MGPAM - My Gym Partner's a Monkey MGS - Mobile Gun System mh - Marshallese language (ISO 639-1 code) mH - Millihenry MH - Marshall Islands (postal symbol; ISO 3166 digram) - Megahenry - Montserrat (FIPS 10-4 territory code) MHC - Major Histocompatibility Complex MHHW - Mean Higher High Water (nautical charts) MHL - Marshall Islands (ISO 3166 trigram) MHLW - Mean Higher Low Water (nautical charts) MHRA - (UK) Medicines and Healthcare products Regulatory Agency MHW - Mean High Water (nautical charts) MHWN - Mean High Water Neaps (nautical charts) MHWS - Mean High Water Springs (nautical charts) MHz - Megahertz mi - Māori language (ISO 639-1 code) Mi - Mebi MI- Malawi (FIPS 10-4 country code),Michigan (postal symbol),Midway Islands (ISO 3166 digram; obsolete 1986), Military Intelligence MIA - Missing In Action MIAA- Maryland Interscholastic Athletic Association,Massachusetts Interscholastic Athletic Association,Michigan Intercollegiate Athletic Association,Mid-America Intercollegiate Athletics Association MIB- Men In Black,Mint In Box (Internet auction/trading listings) MIC - Military Industrial Complex MICLIC - Mine Clearing Line Charge MICOM - Missile Command MICV - Mechanised Infantry Combat Vehicle MID - Midway Islands (ISO 3166 trigram; obsolete 1986) MIDI - Musical Instrument Digital Interface MIDAS - Man-machine Integration Design and Analysis System MIDS - Multi-Function Information Distribution System MIFC - Military Industrial Financial Complex MIFG - Shallow Fog (METAR Code) MIFPC - Military Industrial Financial Pharmaceutical Complex MIKE - Monitoring of Illegal Killing of Elephants MIL - Man-In-the-Loop MILAN - Missile d´infanterie léger antichar (French, "Anti-Tank Light Infantry Missile") MILC - Mirrorless interchangeable-lens camera MILES - Multiple Integrated Laser Engagement System (live combat simulation) MILF- Moro Islamic Liberation Front, Mother I'd Like to Fuck MILSATCOM - Military Satellite Communications MILSET - Mouvement International pour le Loisir Scientifique Et Technique (French, "International Movement for Leisure Activities in Science and Technology") MILSTRIP - Military Standard Requisitioning and Issue Procedure DLMSO MILSTRIP Manual MIMAROPA - Mindoro, Marinduque, Romblon, Palawan (a region in the Philippines) MIMOSA - MIcroMeasurements Of Satellite Acceleration MIMPT - Member of the Institute of Maxillofacial Prosthetists and Technologists MIP- Multilateral Interoperability Programme,Multiple Identity Poster MIPC - Military Industrial Pharmaceutical Complex MIRA - MILAN Infra-Red Acquisition (thermal sight) MIRV - Multiple Independent Reentry Vehicle MIS- Management Information Systems,Museum Information System MISREP - Mission Report MISSI - Multilevel Information System Security Initiative MIT- Massachusetts Institute of Technology,methylisothiazoline,Milli Istihbarad Teskilati (Intelligence service of Turkey) MITL - Man-In-The-Loop MITS - see entry mJ - Millijoule MJ- Megajoule, Michael Jordan MJD - Modified Julian Day MJP - Military Judgement Panel mk - Macedonian language (ISO 639-1 code) mK - Millikelvin MK- Air Mauritius (IATA code),Macedonia (ISO 3166 digram; FIPS 10-4 country code), Mandalskameratene (Norwegian football club), Megakelvin, Milton Keynes,Missionary Kids,Mortal Kombat (1992 video game),Mortal Kombat (2011 video game) mkd - Macedonian language (ISO 639-2 code) MKD- Macedonian denar (ISO 4217 currency code),Republic of Macedonia (ISO 3166 trigram) MKG - Michael Kidd-Gilchrist (American basketball player) MKO - Mojahedin-e-Khalq Organization (Persian, "People's Mujahedin of Iran") MKS- Metre-Kilogram-Second (system of units), MKS Inc. software company MKSA - Metre-Kilogram-Second-Ampere (system of units) MKT- Missouri-Kansas-Texas Railroad (1865-1989),Mortal Kombat Trilogy,ML[edit] ml - Malayalam language (ISO 639-1 code) mL - Millilitre ML- Mali (FIPS 10-4 country code; ISO 3166 digram), Maximum Likelihood, Megalitre MLA- Martial Law Administration of Bangladesh,Master of Landscape Architecture,Medical Library Association,Member of Legislative Assembly,Modern Language Association,Mutual legal assistance treaty,Myelosis Leucemica Acuta MLB - Major League Baseball MLC - Member of the Legislative Council (in India) MLE - Maximum likelihood estimation mlg - Malagasy language (ISO 639-2 code) MLHW - Mean Lower High Water (nautical charts) MLI - Mali (ISO 3166 trigram) MLK - Martin Luther King, Jr. MLL - Major League Lacrosse MLLW - Mean Lower Low Water (nautical charts) MLP - My Little Pony MLRS - Multiple-Launch Rocket System MLS- Major League Soccer,Multiple Listing Service MLSE- Maple Leaf Sports & Entertainment (owner of several Toronto-based sports teams),Maximum likelihood sequence estimation MLSR - Missing, Lost or Stolen Report mlt - Maltese language (ISO 639-2 code) MLT - Malta (ISO 3166 trigram) MLVW - Medium Logistics Vehicle, Wheeled MLW - Mean Low Water (nautical charts) MLWN - Mean Low Water Neaps (nautical charts) MLWS - Mean Low Water Springs (nautical charts) mm - Millimetre Mm - Megametre MM - Military Medal - Myanmar (ISO 3166 digram) - Two Thousand (in Roman numerals) MMA - Mixed martial arts - Moving Mechanical Assembly MMC - Machinist's Mate, Chief (USN rating) - Materiel Management Centre MMCM - Machinist's Mate, Master Chief (USN rating) - Magnetic Mine Counter Measure MMCS - Machinist's Mate, Senior Chief (USN rating) MMEV - Multi-Mission Effects Vehicle MMI - Man-Machine Interface MMI - McLean Meditation Institute MMIC - Mindfulness & Meditation Instructor, Certified MMIC - McLean Meditation Institute Certified MMI - Magical MonkeyZ Inc. MMK - Burmese kyat (ISO 4217 currency code) MMO - Massively Multiplayer Online (computer game) MMOR - Master of Management in Operations Research MMORPG - Massively multiplayer online role-playing game MMPR - Mighty Morphin Power Rangers MMR - Measles, Mumps and Rubella vaccine - Myanmar (ISO 3166 trigram) MMS - Multimission Modular Spacecraft MMU - Manchester Metropolitan University - Manned Manoeuvring Unit MMW - Millimetre Wave (radar, from "mm Wave") mn - Mongolian language (ISO 639-1 code) mN - Millinewton Mn - Manganese MN - Meganewton - Minnesota (postal symbol) - Monaco (FIPS 10-4 country code) - Mongolia (ISO 3166 digram) MNB - Multinational Brigade MND - Motor Neurone Disease - Multinational Division MNE - Montenegro (ISO 3166 trigram) MNG - Multiple-image Network Graphics - Mongolia (ISO 3166 trigram) MNMF - Multi-National Maritime Force MNP - Northern Mariana Islands (ISO 3166 trigram) MNS - Mission Needs Statement MNT - Molecular nanotechnology - Mongolian tugrik (ISO 4217 currency code) mo - Moldovan language (ISO 639-1 code) Mo - Molybdenum MO - Macau (ISO 3166 digram) - Medical Officer - Missouri (postal symbol) - modus operandi (Latin, "mode of operation") - Morocco (FIPS 10-4 country code) [mutual oral] MOA - Museum of Art (Brigham Young University) MOAB - Massive Ordnance Air Blast (official) - Mother Of All Bombs (slang) MOB - Man Over Board - Marching Owl Band - Movable Object Block MOC - Macedonian Orthodox Church - Measure Of Capability - Mission Operations Centre - My Own Creation (Lego) MOCAS - Mechanization Of Contract Administration Services MoD - Ministry of Defence (United Kingdom) and various other countries MOD - Magneto-optical disc - Masters of Deception - Minimum Object Distance - Multiple Organ Dysfunction MoDAF - Ministry of Defence Architecture Framework ("moh-daff") modem - Modulator-Demodulator ModSAF - Modular Semi-Automated Forces (military simulation) Moe - Marvel of entertainment MOE - Measure Of Effectiveness MOF - (a/i) Ministry of Finance (Japan) MOFA - (a/i) Ministry of Foreign Affairs (Japan) MOH - (a/i) Medal of Honor - Music On Hold MOID - Minimum Orbital Intersection Distance MOJWA - Movement for Oneness and Jihad in West Africa mol - Moldovan language (ISO 639-2 code) - mole (unit) MOLO - Mobile Other Licensed Operator (UK) MoM - Multiple of the median MOM - Message Oriented Middleware MOM - Master's Degree in Oriental medicine MoMA - Museum of Modern Art (NYC) mon - Mongolian language (ISO 639-2 code) MOND - Modified Newtonian Dynamics MOO - Measure Of Outcome MOOTW - Military Operations Other Than War ("moot-double-you") MOP - Macau pataca (ISO 4217 currency code) - Measure Of Performance MOPE - Ministry of Population and Environment (Nepal) - Most Oppressed People Ever (politics) MOPP - (i/a) Mission-Oriented Protective Posture MORP - Meteorite Observation and Recovery Project MORS - Military Operations Research Society MOS - Military Occupational Specialty - Mit Out Sound / Motor Only Sync - Mobile Object System - Model Output Statistics - Multiplayer Online Services - Mean Opinion Score MOSFET - Metal-Oxide-Semiconductor Field-Effect Transistor MOSS - MObile Submarine Simulator - Moving Object Support System MOT - Ministry of Transport (UK) MOTA - Member of the Orthodontic Technicians Association MOTESS - Moving Object and Transient Event Search System MOTO - Mail Order / Telephone Order - Master of the obvious MOU - Memorandum Of Understanding MOUT - Military Operations in Urban[ized] Terrain MOVES - Modeling, Virtual Environments, and Simulation Institute MOW - Maintenance of way (also MW) MOZ - Mozambique (ISO 3166 trigram) MP - Magic points - Mauritius (FIPS 10-4 country code) - Member of Parliament - Military Police - Missouri Pacific - Northern Mariana Islands (postal symbol; ISO 3166 digram) mPa - Millipascal MPa - Megapascal MPA - Maritime Patrol Aircraft - Master of Public Administration MPAA - Motion Picture Association of America MPC - Minor Planet Center - Minor Planet Circular MPC - Military Payment Certificate MPEC - Minor Planet Electronic Circular MPEG - Motion Pictures (Coding) Experts Group MPEV - Multi-Purpose Engineering Vehicle MPF - Maritime Prepositioning Force MPFC - Medial PreFrontal Cortex MPG - Miles Per Gallon MPMC - Medial PreMotor Cortex MPSI - Member of the Pharmaceutical Society of Ireland MPSoC - MultiProcessor System-on-Chip MPSRON - Maritime Propositioning Ship Squadron MQ - Martinique (ISO 3166 digram) - Midway Islands (FIPS 10-4 territory code) mr - Marathi language (ISO 639-1 code) MR - Mauritania (FIPS 10-4 country code; ISO 3166 digram) MRAV - Multi-Role Armoured Vehicle MRBM - Medium Range Ballistic Missile MRC - Maintenance Requirements Card MRD - Motorized Rifle Division MRE - Meal y to Eat (U.S. military rations) MRGO - Mississippi River-Gulf Outlet Canal (also referred to as MR-GO or "Mr. Go") MRGW - Medium-Range Guided Weapon mri - Māori language (ISO 639-2 code) MRI - Magnetic Resonance Imaging MRL - Multiple Rocket Launcher MRO- Maintenance, Repair and Operating,Mars Reconnaissance Orbiter, Mauritanian ouguiya (ISO 4217 currency code) MRPharmS - Member of the Royal Pharmaceutical Society (Great Britain) MRR- Maximum Rock and Roll,Minimum-Risk Route,My Restaurant Rules MRS - Magnetic Resonance Spectroscopy MRSA - Methicillin-resistant Staphylococcus aureus MRT- Mass Rapid Transit — used as either an official or unofficial name for metro systems in Singapore, Kaoshiung, Bangkok, Taipei, Chennai, and Delhi, Mauritania (ISO 3166 trigram) MRTFB - U.S. Major Range and Test Facility Base ms- Malay language (ISO 639-1 code),Millisecond mS - Millisiemens Ms - Megasecond MS- mano sinistra (Latin, "left hand"), manuscript, Master of Science, Megasiemens, Microsoft (sometimes M$), Mississippi (postal symbol),Montserrat (ISO 3166 digram), Multiple Sclerosis,M&S, Modelling & Simulation,Marks & Spencer msa - Malay language (ISO 639-2 code) MSB- Main Support Battalion,Most Significant Bit (or Byte) MSD - Minimum Safe Distance MSDB - Multi Source Data Base MSDE- Maryland State Department of Education, Microsoft Data[base] Engine,Microsoft SQL Server 2000 Desktop Engine, Military Scenario Development Environment,Mission Simulation Dynamic Engine MSDL - Military Scenario Definition Language MSE - Multiple Subscriber Element MSEC - Message Security Encryption Code ("emm-sec") MSG- MonoSodium Glutamate,Madison Square Garden (either the 1879, 1890, 1925, or current versions of the venue) MSH- Medium Support Helicopter,Mount Saint Helens MSI- Micro-Star International, Multispectral imagery MSIE- Microsoft Internet Explorer,Master of Science in Industrial Engineering MSL- Mars Science Laboratory,Mean Sea Level, Missile MSLP - Mean Sea Level Pressure MSM- Mainstream media, Men who have sex with men,Mount St Mary's School MSN- Microsoft Network,Master of Science in Nursing MSNBC - Microsoft National Broadcasting Company Cable news channel (see also msnbc.com) MSO - Multiple System Operator MSPA- Migrant and Seasonal worker Protection Act, MS Paint Adventures MSPB - Merit Systems Protection Board MSR- Main Supply Route,Module Service Record, Montserrat (ISO 3166 trigram), Motor Schlepp Regulung,Mountain Safety Research (outdoor supplies manufacturer) MSSA - Methicillin-susceptible Staphylococcus aureus MST- Madison Symmetric Torus,Mountain Standard Time (UTC-7 hours),MST3K or MST3k - Mystery Science Theater 3000 MSU- Michigan State University,Montana State University,Mountain State University,Lomonosov Moscow State University (Russia, a.k.a. MGU),MT[edit] mt - Maltese language (ISO 639-1 code) mT - Millitesla Mt - Meitnerium MT- Malta (FIPS 10-4 country code; ISO 3166 digram),Megatesla,Montana (postal symbol), Motor Transport (military) MTA- Metropolitan Transportation Authority (Boston) (now Massachusetts Bay Transportation Authority),Metropolitan Transportation Authority (New York) MTBF - Mean time between failures MtF - Male-to-female transsexual MTF- Magnetized target fusion,Medical Treatment Facility,Message Text Format,Modulation transfer function (optics) MTG - Magic: The Gathering MTL- Maltese lira (ISO 4217 currency code), Mean Tide Level (nautical charts)* MTM - Methods-Time Measurement MTOE - Modified Table of Organization and Equipment ("emm-toe") MTP- Maritime Tactical Publication,Materiel Transfer Plan,Mission Training Plan MTQ - Martinique (ISO 3166 trigram) MTR- Main and Tail Rotor (helicopter type),Mass Transit Railway (Hong Kong metro system),Military-Technological Revolution MTS- Maintenance Training System,Manitoba Telecom Services,Michigan Terminal/Timesharing System,Movement Tracking System,Multichannel television sound,Multi-Technical Services MTT - Methylthiazol tetrazolium (assay) MTU - Tankovei Mostoukladchik (Russian Танковый Мостоукладчик, "Tank Bridge-Layer") † MTV- MainosTeleVisio (Finnish commercial TV company),Music TeleVision MTVL - Mobile Tracked Vehicle, Light MTWS - MAGTF Tactical Warfare System MU - Mauritius (ISO 3166 digram) - Oman (FIPS 10-4 country code; from Muscat) MUA - Meritorious Unit Award - Military Utility Assessment MUR - Mauritius rupee (ISO 4217 currency code) MUS - Mauritius (ISO 3166 trigram) mV - Millivolt MV - Maldives (FIPS 10-4 country code; ISO 3166 digram) - Megavolt - Motor Vehicle - Motor Vessel MVC - Missouri Valley Conference MVFC - Missouri Valley Football Conference MVNO - Mobile virtual network operator MVR - Maldivian rufiyaa (ISO 4217 currency code) mW - Milliwatt MW- Maintenance of way (also MOW), Malawi (ISO 3166 digram), Medium Wave (radio), Megawatt, Mountain West (Conference) (formal initialism since July 2011) MWC- Maritime Warfare Centre (various nations),Mountain West Conference (still used informally, although the league has adopted "MW") MWESH - Machismo Wizards Extended SHelter (operating system) MWI - Malawi (ISO 3166 trigram) MWK - Malawian kwacha (ISO 4217 currency code) MWOA - Mount Wilson Observatory Association MWR - Morale, Welfare, and Recreation MWTB - Mounted Warfare Test Bed MX - Mail Exchange - Mexico (FIPS 10-4 country code; ISO 3166 digram) - Missile eXperimental MXN - Mexican peso (ISO 4217 currency code) my - Burmese language (ISO 639-1 code) MY - Malaysia (FIPS 10-4 country code; ISO 3166 digram) mya - Burmese language (ISO 639-2 code) - million years ago MYOB - Mind Your Own Business MYR - Malaysian ringgit (ISO 4217 currency code) MYS - Malaysia (ISO 3166 trigram) MYT - Mayotte (ISO 3166 trigram) MZ - Mach-Zehnder (interferometer) - Magnetic Azimuth - Move, Zig (Zero Wing) - Mozambique (FIPS 10-4 country code; ISO 3166 digram) MZN - Mozambique metical (ISO 4217 currency code) n - Nano N - Newton - Nitrogen - North N3F - National Fantasy Fan Federation na - Nauruan language (ISO 639-1 code) nA - Nanoampere Na - Sodium (Latin Natrium) NA - Namibia (ISO 3166 digram) - Narcotics Anonymous - National Archives - Negative Acknowledge NAA - N-Acetylaspartate NAAD - North American Air Defense NAAFI - Navy, Army and Air Force Institute (UK) - No Ambition And Fuckall Interest (RSA army slang) NAAK - Mark I NAAK, Nerve Agent Antidote Kit NAACP - National Association for the Advancement of Colored People ("N double-A CP") NAAQS - National Ambient Air Quality Standards NAAWS - NATO Anti-Air Warfare System NABCI - North American Bird Conservation Initiative ("nab-see") NAC - (i/a) National Agency Check - U.S. Naval Avionics Center - U.S. Navy Advanced Concepts - North Atlantic Council - Northern Area Command NACA - (U.S.) National Advisory Committee for Aeronautics (1915-1958, became NASA) NACC - North Atlantic Cooperation Council NACISA - NATO Communications and Information Systems Agency NACMA - NATO Air Command and Control System Management Agency NACRA - North America Caribbean Rugby Association (more specifically rugby union) NAD - Namibian dollar (ISO 4217 currency code) NAEC - U.S. Naval Air Engineering Center NAF - NATO Architecture Framework - Naval Air Facility NAFLD - NonAlcoholic Fatty Liver Disease NAFO - Northwest Atlantic Fisheries Organization NAFERA - Native American Free Exercise of Religion Act NAFTA - North American Free Trade Agreement NAGPRA - Native American Graves Protection and Repatriation Act NAI - Named Area of Interest - Network Access Identifier NAICS - North American Industry Classification System NAIL - Neurotics Anonymous NAILS - National Airspace Integrated Logistics System NAIRU - Non Accelerating Inflation Rate of Unemployment NAK - Negative Acknowledge NAM - Namibia (ISO 3166 trigram) NAMBLA - North American Man-Boy Love Association NAMRL - Naval Aerospace Medical Research Laboratory NaN - Not A Number (computing) NAO - UK National Audit Office NAPDD - Non-Acquisition Program Definition Document ("nap-dee-dee") NAPS - Navy Acquisition Procedures Supplement NARA - (U.S.) National Archives and Records Administration NARAL - National Abortion Rights Action League NARDAC - Naval Regional Data Automation Center NARDIC - U.S. Navy Acquisition Research and Development Information Center NARPV - National Association for Remotely Piloted Vehicles NAS - National Academy of Sciences - National Air Space - National Audubon Society - Naval Air Station - New Attack Submarine NASA - National Aeronautics and Space Administration NASCAR - National Association for Stock Car Auto Racing NASDAQ - National Association of Securities Dealers Automated Quotations NASED - National Association of State Election Directors [1][2] NASH - Non-Alcoholic Steatohepatitis NASP - National Aerospace Plane NASS - National Association of Secretaries of State [3] NatGeo - National Geographic NATO - National Association of Theatre Owners - North Atlantic Treaty Organisation nau - Nauruan language (ISO 639-2 code) NaUKMA - National University of Kyiv-Mohyla Academy nav - Navajo language (ISO 639-2 code) NAV - Navigation[al] NAVCAMS - Naval Communications Area Master Station NAVCC - National Audio-Visual Conservation Center NAVCENT - Naval Forces U.S. Central Command NAVDAC - Naval Data Automation Command NAVEUR - Naval Forces U.S. European Command NAVFE - U.S. Naval Forces, Far East NAVFOR - Naval Force NAVMACS - Naval Modular Automatic Communication Subsystem NAVNET - Navy Network NAVS - Non-Cooperative Airborne Vector Scoring NAVSAT - Navigation Satellite NAVSPACECOM - U.S. Navy Space Command NAVSPASUR - U.S. Naval Space Surveillance System NAVSTAR - Navigation Satellite Timing And Ranging NAVTACNET - Navy Tactical Network NAWC - U.S. Naval Air Warfare Center NAWMP - North American Waterfowl Management Plan ("gnaw-wump") nb - Norwegian Bokmål language (ISO 639-1 code) Nb - Niobium NB - New Brunswick (postal symbol) - nota bene (Latin, "mark well") NBA - National Basketball Association NBACC - U.S. National Biodefense Analysis and Countermeasures Center ("enn-back") NBC - National Broadcasting Corporation - Nuclear, Biological, and Chemical NBCRS - NBC (Nuclear, Biological, and Chemical) Reconnaissance System NBIC - Nanotechnology, Biotechnology, Information Technology, Cognitive Science nbl - Southern Ndebele language (ISO 639-2 code) NBL - National Basketball League (Australia) NBT - Nitroblue tetrazolium (assay) nC - Nanocoulomb NC- Network Computer, New Caledonia (ISO 3166 digram), Node Centre,Non-Consensual,Normally Closed, North Carolina (postal symbol) NCA - National Command Authority NCAA - National Collegiate Athletic Association ("NC double A") NCAR - U.S. National Center for Atmospheric Research NCB - National Codification Bureau NCCAM - U.S. National Center for Complementary and Alternative Medicine NCCUSL - National Conference of Commissioners on Uniform State Laws (U.S.) NCDDR - U.S. National Center for the Dissemination of Disability Research NCES- U.S. National Center for Education Statistics,Net-Centric Enterprise Services NCI - U.S. National Cancer Institute NCIS- National Criminal Intelligence Service (British),Naval Criminal Investigative Service (U.S. Navy; see also NCIS, a U.S. TV series based on this unit) NCL - New Caledonia (ISO 3166 trigram) NCLR - National Council of La Raza NCMO - No Commitment Make Out NCND- Non Circumvention & Non Disclosure, Neither Confirm Nor Deny, New Concept New Design NCO - Non-Commissioned Officer NCP - Net Contracted Purchases NCR - National Cash Register Co. NCTR - Non-Co-operative Target Recognition NCW - Network Centric Warfare nd - Northern Ndebele language (ISO 639-1 code) Nd - Neodymium ND- Non-Disclosure, North Dakota (postal symbol) NDAA - U.S. National Defense Authorization Act NDBP - Non-Departmental Public Body (Scotland) NDCC - New Directions Counseling Center (Concord, California) nde - Northern Ndebele language (ISO 639-2 code) NDH- Neue Deutsche Härte (German, "new German hardness"—heavy metal genre),Nezavisna Država Hrvatska (Croatian, "Independent State of Croatia"—Nazi puppet state) ndo - Ndonga language (ISO 639-2 code) NDP - New Democratic Party (Canada) NDS - Nintendo DS NDU - National Defense University (Washington, DC) ne - Nepali language (ISO 639-1 code) Ne - Neon NE- Nebraska (postal symbol),Niger (ISO 3166 digram), North-East NEA- National Education Association (U.S. labor union),Near-Earth Asteroid,Nuclear Energy Agency (OECD) NEAT-Near-Earth Asteroid Tracking - ,National Emergency Access Target (Au Health) NEC- Network-enabled capability,Nijmegen Eendracht Combinatie (Dutch, "Nijmegen Unity Combination"; football club formed by the 1910 merger of the Nijmegen and Eendracht clubs),Nippon Electric Company, the original English-language name of the company now known as NEC,Northeast Conference (U.S. college sports) NED - Netherlands (IOC and FIFA trigram, but not ISO 3166) NECTEC - National Electronics and Computer Technology Center (Thailand) NEI - National Eye Institute - Not Enough Information - Nuclear Energy Institute NEMS - National Energy Modeling System (USDOE-EIA) NEO- Near-Earth Object,Non-combatant Evacuation Operations nep - Nepali language (ISO 639-2 code) NEPA - National Environmental Policy Act NER - Niger (ISO 3166 trigram) NERICA - New Rice for Africa NESDIS - National Environmental Satellite, Data and Information Service NESP - NSA/CSS Enterprise Standards Program NET - National Educational Television NETCU - (UK) National Extremism Tactical Co-ordination Unit NETL - (US) National Energy Technology Laboratory NETWARS - Network Warfare Simulation NEWS- Navy Electronic Warfare Simulator,North, East, West, South NEX - Navy EXchange nF - Nanofarad NF - Norfolk Island (ISO 3166 digram) NFA- (U.S.) National Firearms Act (often used to refer to the guns and accessories regulated under this law),No-Fire Area NFC- National Football Conference,Near field communication NFER - National Foundation for Educational Research NFG - No Fucking Good NFHS - National Federation of State High School Associations NFI - Not F****** Interested NFK - Norfolk Island (ISO 3166 trigram) NFL- National Football League,No-Fire Line Nfld - Newfoundland NFPA - National Fluid Power Association (United States) NFT - No Further Text ng - Nanogram - Ndonga language (ISO 639-1 code) NG- Natural Gas,Next Generation, Niger (FIPS 10-4 country code),Nigeria (ISO 3166 digram) NGA- National Geospatial-Intelligence Agency, Nigeria (ISO 3166 trigram) NGH - Northern General Hospital NGATS - New Generation Army Targetry System NGIC - National Ground Intelligence Center ("Injick") NGN - Nigerian naira (ISO 4217 currency code) NGO - non-governmental organization NGR - Nigeria (IOC trigram, but not ISO 3166 or FIFA) NGS - Naval Gunfire Support nH - Nanohenry NH - New Hampshire (postal symbol) - New Hebrides (ISO 3166 digram; obsolete 1980) - Vanuatu (FIPS 10-4 country code; from New Hebrides) NHANES - National Health and Nutrition Examination Survey NHB - New Hebrides (ISO 3166 trigram; obsolete 1980) NHB - No Holds Barred radio (Link) NHL - National Hockey League NHO - Næringslivets Hovedorganisasjon (Confederation of Norwegian Enterprises, a Norwegian employers' organisation) NHRA - National Hot Rod Association NHS - National Health Service (UK) Ni - Nickel NI- Nicaragua (ISO 3166 digram),Nigeria (FIPS 10-4 country code) NIAAA - U.S. National Institute on Alcohol Abuse and Alcoholism NIAID - National Institute of Allergies and Infectious Disease NIAG - NATO Industrial Advisory Group NIAMD - National Institute of Arthritis and Musculoskeletal Diseases NIB - New In Box (Internet auction/trading listings) NIBP - Non-invasive blood pressure monitor NIC- Network Interface Card, Nicaragua (ISO 3166 trigram) NicA - Nicotine Anonymous NICAP - National Investigations Committee on Aerial Phenomena NICE - UK. National Institute for Health and Clinical Excellence NICHD - National Institute of Child Health and Human Development [4] NICP - National Inventory Control Point NIDDK - National Institute of Diabetes and Digestive and Kidney Diseases NIDRR - National Institute on Disability Research and Rehabilitation NIEHS - National Institute of Environmental Health Sciences NIG - Niger (IOC and FIFA trigram, but not ISO 3166) NIH- National Institutes of Health,Not Invented Here NIIN - National Item Identification Number NIMA - National Imagery and Mapping Agency (became NGA) NIMBY - Not In My Back Yard (See NOME) NIMG - Not In My Generation NiMH - nickel metal hydride ("Ni" is the chemical symbol for nickel) NIMH- National Institute of Medical Herbalists,National Institute of Mental Health NIN - Nine Inch Nails (band) NIO - Nicaraguayan cordoba oro (ISO 4217 currency code) NIPR - National Institute of Polar Research (Japan) NIR - Northern Ireland (FIFA trigram; not eligible for an ISO 3166 or IOC trigram) NISAC - U.S. National Infrastructure Simulation and Analysis Center NISCAP - NSA Information System Certification and Accreditation Program NISER - National Institute of Science Education and Research NIST - (a/i) National Institute of Standards and Technology NIT- National Invitation Tournament (U.S. college basketball), National Institutes of Technology (India) NITFS - National Imagery Transmission Format Standard NIU - Niue (ISO 3166 trigram) nJ - Nanojoule NJ - New Jersey (postal symbol) NJHS - National Junior Honor Society NJPW - New Japan Pro Wrestling nK - Nanokelvin NKA - No Known Allergies NKVD - Narodnyi Komissariat Vnutrennikh Del (Russian "People's Commissariat of Internal Affairs") (1934-1954) nl - Dutch language (ISO 639-1 code) nL - Nanolitre NL- Netherlands (ISO 3166 and FIPS 10-4 country code digram),Newfoundland and Labrador (postal symbol) NLB - Non-Linear Battlefield nld - Dutch language (ISO 639-2 code) NLD - Netherlands (ISO 3166 trigram) NLF - National Liberation Front (disambiguation) NLL - National Lacrosse League NLP- Natural Language Processing,Neuro-Linguistic Programming (pseudoscience) NLW - Non-Lethal Weapon nm - Nanometre NM - New Mexico (postal symbol) NMCI - Navy Marine Corps Intranet NMCS - Not Mission Capable Supply (SM&R code) NMD - U.S. National Missile Defense NMN - No middle name NMOS - (i/a) N-type/Negative Metal-Oxide-Semiconductor transistor ("enn-moss") NMSG - NATO Modelling and Simulation Group NMR - Nuclear Magnetic Resonance NMHNFG - Not Made Here, No Fucking Good nn - Norwegian Nynorsk language (ISO 639-1 code) nN - Nanonewton NNE - North North-East nno - Norwegian Nynorsk language (ISO 639-2 code) NNSA - U.S. National Nuclear Security Administration NNW - North North-West no - Norwegian language (ISO 639-1 code) No - Nobelium NO- Nitric Oxide, Normally Open, Norway (ISO 3166 and FIPS 10-4 country code digram) NOAA - U.S. National Oceanic and Atmospheric Administration NOAF - Norwegian Air Force NOAO - National Optical Astronomy Observatory nob - Norwegian Bokmål language (ISO 639-2 code) NOC - UK. National Oceanography Centre NODEF - NATO Oceanographic Data Exchange Format NOK - Norwegian krone (ISO 4217 currency code) NOLA - New Orleans, Louisiana (LA is the official postal code for Louisiana) NOGI - New Orleans Grande Isle (award for diving) NOLF - Navy OutLying Field NOM - Novus Ordo Missae or New Ordinary of the Mass (sometimes abbreviated to simply "NO") NOME - Not on Mars Either NoMBO - Non-mine, Mine-like Bottom Object NOME - Not on Mars Either (see NIMBY) NOPA - National Office Products Alliance - National Office Products Association nor - Norwegian language (ISO 639-2 code) NOR - Norway (ISO 3166 trigram) NORAD - North American Aerospace Defense Command NORCECA - North, Central America and Caribbean Volleyball Confederation NORELPREF - No religious preference NORML - National Organization for the Reform of Marijuana Laws ("normal") NORTHAG - Northern Army Group NOS- Network Operating System,New Old Stock (Internet auction/trading listings),Nitric Oxide Synthase (enzyme) NOSA - NATO OSI Security Architecture NOTAFLOF - No One Turned Away For Lack Of Funds NOTAM - Notice to Airmen NOW - National Organization for Women Np - Neap tide (nautical charts) - Neptunium NP - National Permit - A permit in India for trucks so they can go anywhere in the nation NP - Nepal (ISO 3166 and FIPS 10-4 country code digram) NPB - Nippon Professional Baseball NPC - National Postgraduate Committee - National Provincial Championship (New Zealand rugby competition, now defunct) - Navigation Planning Chart - Non-Player Character (role-playing games) NPCS - Non-Passenger Coaching stock (in Railways) NPD - Nationaldemokratische Partei Deutschlands (German) NPDI - New Product Development and Introduction NPG - Needline/Network Participation Group NPH - Normal Pressure Hydrocephalus NPL - National Priorities List - Nepal (ISO 3166 trigram) NPOV - Neutral Point Of View NPR - National Public Radio - Nepalese rupee (ISO 4217 currency code) NQ - Dronning Maud Land (ISO 3166 digram; obsolete 1983) NQOCD - Not Quite Our Class, Dear (or Darling). (Upper-class English slang) NPO - nothing by mouth nr - Southern Ndebele language (ISO 639-1 code) NR - Nauru (ISO 3166 and FIPS 10-4 country code digram) NRA - National Rifle Association NRAO - National Radio Astronomy Observatory NRC - National Research Council (U.S.) - Nuclear Regulatory Commission (U.S.) NRDC - (U.S.) Natural Resources Defense Council NREL - U.S. National Renewable Energy Laboratory NRK - Norsk Rikskringkasting (Norwegian Broadcasting Corporation) NRMP - National Resident Matching Program (U.S. medicine) NRO - U.S. National Reconnaissance Office NRT - Near Real Time NRTA - National Rat Terrier Association - National Retail Tenants Association - National Retired Teachers Association - Northwest Regional Transmission Association NRU - Nauru (ISO 3166 trigram) ns - Nanosecond nS - Nanosiemens NS- Norfolk Southern Railway (AAR reporting mark),Nova Scotia (postal symbol),Suriname (FIPS 10-4 country code) NSA- U.S. National Security Agency,Naval Support Activity,No Strings Attached NSABB - National Science Advisory Board for Biosecurity NSAID - Non-Steroidal Anti-Inflammatory Drug NSB - Norges Statsbaner (Norwegian State Railways) NSC - National Security Council NSDAP - Nationalsozialistische Deutsche Arbeiterpartei (German: "German National Socialist Workers Party", the formal name of the Nazi Party) NSDL - National Science Digital Library (US) NSG - National System for Geospatial-Intelligence NSN - National Stock Number NSNA - National Student Nurses' Association NSO - National Standardization Office (ABCA) NSS - (U.S.) Naval Simulation System NST - (UK) Nimrod Software Team NSTAC - National Security Telecommunications Advisory Committee NSV - Nikitin-Sokolov-Volkov heavy machine gun (Russian НСВ Никитина-Соколова-Волкова) ru:ПулеметНСВ-12,7 "Утес" NSW - New South Wales (postal symbol) nT - Nanotesla NT- National Trust (UK), Saudi-Iraqi neutral zone (ISO 3166 digram; obsolete 1993), New Technology (Windows NT), Northern Territory (Australia) (postal symbol),Northwest Territories (Canada) (postal symbol) NTC- National Training Center,Negative Temperature Coefficient (thermistor) NTDS - Naval Tactical Data System NTP - Network Time Protocol NTR - Network Time Reference NTRA - National Thoroughbred Racing Association NTSB - National Transportation Safety Board NTSC - National Television Standards Committee (colloquially, Never Twice the Same Color) NTV - Non-Tactical Vehicle NTY - (Internet Abbreviations:) Not Tested Yet; (Alternatively) No Thank You NTZ - Iraq-Saudi Arabia Neutral Zone (ISO 3166 trigram; obsolete 1993) NU- Nicaragua (FIPS 10-4 country code),Niue (ISO 3166 digram),Nunavut (postal symbol) NUI - No user interface ("noo-ey") NUL- Null character (ASCII code of control character),National Urban League NUTS - Nuclear Utilization Target Selection NUWC - U.S. Naval Undersea Warfare Center nv - Navajo language (ISO 639-1 code) nV - Nanovolt NV- Naamloze vennootschap (Dutch, "innominate partnership" or "anonymous venture"; i.e. a public limited-liability company), Nevada (postal symbol) NVEOL - Night Vision and Electro-Optics Laboratory NVESD - CERDEC Night Vision and Electronic Sensors Directorate, Fort Belvoir, Virginia NVG - Night Vision Goggles NVL - Night Vision Laboratory nW - Nanowatt NW - North-West NW - Nuclear Weapon NWA - National Wrestling Alliance NWF - National Wildlife Federation NWFZ - Nuclear-Weapon-Free Zone NWHN - U.S. National Women's Health Network nWo - New World Order (see article for explanation of idiosyncratic capitalization) NWOAHM - New Wave of American Heavy Metal NWOBHM - New Wave of British Heavy Metal (sometimes pronounced /n.ˈwɒbm/ as if it were an acronym) NWRA - National Wildlife Rehabilitators Association NWSL - National Women's Soccer League (U.S.) NWT - North-West Territories NX - Part of computer memory marked as "no execute" - Automobile made by Nissan - unit of illuminance - National Express - Net exports NXA - 21st arcade game in the Pump It Up series NXD - Native XML NXE - New Xbox Experience NXG - New Cross Gate station NXL - National XBall League NXN - Nike Cross Nationals NXP - "Next Experience" Semiconductors ny - Chichewa language (ISO 639-1 code) NY - New York (postal symbol) nya - Chichewa language (ISO 639-2 code) NYHA - New York Heart Association NYO - National Youth Orchestra of Great Britain NYRA - National Youth Rights Association - New York Racing Association (horse racing) NYSE - New York Stock Exchange NZ - New Zealand (ISO 3166 and FIPS 10-4 country code digram) NZC - New Zealand Cricket NZD - New Zealand dollar (ISO 4217 currency code) NZL - New Zealand (ISO 3166 trigram) NzL - Noze looan (online/event listings) NZOSS - New Zealand Open Source Society NZRU - New Zealand Rugby Union O - Oberst - Observer - Obstacle - Octal - Officer - Official - Oh - Operational - Operator - Oprah (magazine) - Outstanding - Oxygen OA - Operational Analysis - Overeaters Anonymous OAC - On Approved Credit OAP - Old Age Pensioner (UK) OAS - Organization of American States OARSI - Osteoarthritis Research Society International OASIS - Objects and Agents for Information Systems and Simulation - Organization for the Advancement of Structured Information Standards OASIS - Ontario Agencies Supporting Individuals with Special Needs OASIS - Ontario Association of Sewage Industry Services OASP - Operational Analysis Support Paper/Plan OAU - Organization for African Unity ob - obiit (Latin, " he died") OB - Obedience - Obligation - Obligatory - Obsolete - Obstetrics - Ocean Beach (California) - Off Break (cricket) - Old Bryanstonian - Order of Battle - Outlet Box (electrical) - Overbought (stock market) - Oversight Board OBE - Officer of the Order of the British Empire OBJ - Objective (military parlance) OBS - Observation/Observer - Obsolete - Obstacle - Off Balance Sheet - Optical Burst Switching (IEEE) - Organic Brain Syndrome - Organization(al) Breakdown Structure OBSS - Off Board Sensor Systems - Ordo Byantinus Sancti Sepulchri (Byzantine Order of the Holy Sepulchre) - Orbiter Boom Sensor System (space shuttle) - Origins Billion Star Survey OBX - Outer Banks (North Carolina) oc - Occitan language (ISO 639-1 code) OC - Officer Commanding OCA - Observatoire de la Côte d'Azur - Offensive Counter-Air OCD - Obsessive-Compulsive Disorder OCFS - Oracle Cluster File System OCFS2 - Oracle Cluster File System Release 2 oci - Occitan language (ISO 639-2 code) OCIDS - Optical Combat Identification System OCMCC - [2] Orchard County MCC OCN - Oncology Certified Nurse OCO - Oort Cloud Object OCOKA - Observation, Cover and concealment, Obstacles, Key terrain, and Avenues of approach (mnemonic) OCR - Optical Character Recognition OCS - see entry OD- Old Dragon,Ordnance Datum (nautical charts), Overdose ODAS - OCA-DLR Asteroid Survey ODB- Ol' Dirty Bastard (rapper), One Dirty B*tch/Broad/Babe (professional wrestler), Operational Data Base, Original David Baker (professional poker player; used to distinguish from another professional poker player of the same name), Oxford Dictionary of Byzantium ODBC - Open DataBase Connectivity ODI- Office for Disability Issues (UK government agency),One Day International (cricket),Open Data-Link Interface,Oracle Data Integrator,Overseas Development Institute (UK think tank),OE[edit] OEA - (U.S.) Office of Economic Adjustment OED - Oxford English Dictionary OECD - Organisation for Economic Co-operation and Development (international) OEG - Operation Exposure Guidance OEIS - On-Line Encyclopedia of Integer Sequences OEM - Original Equipment Manufacturer OFA - Occipital Face Area OFDA - U.S Agency for International Development's Office of Foreign Disaster Assistance OGC - Open Geospatial Consortium OGD - Other Government Department OGO - Other Government Organization OGX - OUARGLA - a petroleum state in the south of Algeria OH - Ohio (postal symbol) OHC - OverHead-Cam engine OHHLA - Original Hip-Hop Lyrics Archive OHIP - Ontario Health Insurance Plan OHMS - On Her (or His) Majesty's Service (also written: O.H.M.S.) OHP - Observatoire de Haute-Provence OHSS - Ovarian Hyperstimulation Syndrome OIC - Officer In Charge OIE - World Organisation for Animal Health (originally the Office international des épizooties, French for "International Epizootic Office") OIF - Operation Iraqi Freedom OIOC - Oriental & India Office Collections (in the British Library) oj - Anishinaabe language (Ojibwa) (ISO 639-1 code) OJ - Orange Juice - O.J. Simpson oji - Anishinaabe language (Ojibwa) (ISO 639-2 code) OJT - On-the-Job Training OK- Oklahoma (postal symbol), oll korrect (facetious alteration of "all correct", 1839) OKC - Oklahoma City OLED - Organic Light-Emitting Diode OLS - Operational Linescan System om - Oromo language (ISO 639-1 code) OM - Oman (ISO 3166 digram) - Olympique de Marseille (French football club) OMA - Open Mobile Alliance - Operations & Maintenance, Army OMB - U.S. Office of Management and Budget - Ontario Municipal Board - Order of Mapungubwe in Bronze OMD - Orchestral Manoeuvres in the Dark (1980s pop group) OME - Osaka Mercantile Exchange OMFG - Oh My Fucking God OMG - Oh My God or Or My Gosh OMGW - "Oh My Gosh it's Windy" OMN - Oman (ISO 3166 trigram) OMNCS - U.S. Office of the Manager for the National Communications System OMP - Order of Mapungubwe in Platinum OMR - Omani rial (ISO 4217 currency code) OMS - Order of Mapungubwe in Silver OMT - Object Model Template OMW - On My Way, Oh My Word ON - Ontario (postal symbol) Onna - Oniong, Nnung Ndem, and Awa, a Local Government Area in Nigeria ONC - Orthopaedic Nurse Certified ONCE - Organización Nacional de Ciegos Españoles (Spanish, "National Organization for the Spanish Blind") ONG - Orthodontic National Group ONH - Óglaigh na hÉireann (Irish idiom for "soldiers of Ireland"), used for the following: ONI - (U.S.) Office of Naval Intelligence ONS - Operational Needs Statement OO - Object Oriented - Over & Out OOO - Out Of the Office OOAD - Object Oriented Analysis and Design OOBE - Out-of-body experience OOCL - Orient Overseas Container Line OODA - Observation, Orientation, Decision, Action loop (a.k.a. Boyd's Loop) OOMF - One Of My Followers OOP - Object-Oriented Programming - Out Of Print OOS - Occupational Overuse Syndrome - OneSAF Objective System - Open Operating System - Out Of Service OOTW - Operations Other Than War OP- Observation Point/Post,Ocean Pacific (surfwear and swimwear brand),Original Poster (internet),Order Point, in inventory management; the inventory state at which more items should be ordered. Often expressed as a part of OP/OQ (when quantity OP is reached, order OQ new items),Overpowered, often used to refer to fictional characters (e.g. Superman) or game mechanics (e.g. the Black Lotus in Magic: the Gathering) that are considered disproportionately strong OPA - Other Procurement, Army OPAC - Online Public Access Catalogue OPCON - Operational control OPCW - Organisation for the Prohibition of Chemical Weapons OPEC - Organization of the Petroleum Exporting Countries OPFOR - Opposing force OPI- Office of Primary Interest,Open Prepress Interface OPINTEL - Operational Intelligence OPLAN - Operation plan (also OpPlan) OPORD - Operation order OPP- Ontario Provincial Police,Operational Planning Process,Other People's Property/Pussy/Penis (song) OPS- On-base plus slugging (baseball statistics), Operations OPSEC- Operations security,Open Platform for Security OPSI- Overwhelming post splenectomy infection,UK Office of Public Sector Information OPTAR - Operational target OPV - Offshore Patrol Vessel OQ - Order Quantity, in inventory management; the quantity of new items to be ordered. Often expressed as a part of OP/OQ (when quantity OP is reached, order OQ new items) or - Oriya language (ISO 639-1 code) OR - Operating Room (surgery) - Operational/Operations Research - Oregon (postal symbol) - overreciprocation - when the leader of an inner circle friendship contacts a friend more than is wanted or reasonable ORAU - (a/i) Oak Ridge Associated Universities ORB - (a/i) Object Request Broker ORBAT - Order of Battle ORD - O'Hare International Airport in Chicago, Illinois (IATA Airport Code ORD) ORD - Office of Research and Development - Operational Requirements Document ORF - Operational iness Float ori - Oriya language (ISO 639-2 code) ORISE - Oak Ridge Institute for Science and Education orm - Oromo language (ISO 639-2 code) ORNL - Oak Ridge National Laboratory ORR - Oak Ridge Reservation (U.S. DOE) - Office of Rail Regulation (UK government) - Office of Refugee Resettlement - (CIA) Office of Research and Reports - Operational iness Rate - Operational iness Review ORSA - Oxacillin-resistant Staphylococcus aureus - Operations Research Society of America OS - Operating System os - Ossetic language (ISO 639-1 code) Os - Osmium OSA - Order of St. Augustine OSCE - Organisation for Security and Cooperation in Europe OSD - U.S. Office of the Secretary of Defense - On-screen Display OSDL - Open Source Development Labs OSE - Own Separate Entrance OSERS - U.S. Department of Education Office of Special Education and Rehabilitative Services OSETI - Optical SETI also Optical SETI OSHA - Occupational Safety and Health Administration OSI - Office of Strategic Influence - Ontario Swine Improvement - Open Source Initiative - Open Systems Interconnection OSIA - (U.S.) On-Site Inspection Agency OSL - Open Source License - Optically Stimulated Luminescence - Orbiting Solar Laboratory OSIRIS- Optical, Spectroscopic, and Infrared Remote Imaging System (astronomical system on the Rosetta spacecraft),Optical System for Imaging and low Resolution Integrated Spectroscopy (astronomical system on the land-based Gran Telescopio Canarias) OSM - One Saturday Morning OSOTPBOIAS - One Sec, On The Phone, Be Off In A Sec OSPA - Operations Security Professional's Association site of OSPA OSPA - Oregon School Psychologists Association [3] OSRH - Oružane Snage Republike Hrvatske (en: Armed forces of the Republic of Croatia) oss - Ossetic language (ISO 639-2 code) OSS - Office of Strategic Services (1942-1945, forerunner of CIA) OSU - Ohio State University - Oklahoma State University OTA - Office of Technology Assessment - (a/i) Orthodontic Technicians Association OTAC - Orthodontic Technicians Association Conference - Orthodontic Technicians Association Council OTB - Off The Ball - Offtrack Betting - OneSAF Testbed (a descendant of ModSAF) OTC - Over-The-Counter (drugs) OTD - Off the derech (referring to an Orthodox Jew who has stopped practicing the tenets of his or her faith) OTEA - (U.S. Army) Operational Test Evaluation Agency OTI - Office of Transition Initiatives (United States Agency for International Development) OTO - Ordo Templi Orientis (Latin, "Order of the Temple of the East", i.e. the Order of Oriental Templars) OTOH - On The Other Hand OTS - Off the scale, sexually untouchable except for a lot of money. OTSBH - Over The Shoulder Boulder Holder OTW - On The Way OTYBL - Over To You Blue Leader OTYRL - Over To You Red Leader OU - University of Oklahoma OVC - Overcast (METAR Code) - Ohio Valley Conference OVV - Optically Visually Violent, or Optically Violently Variable - a type of quasar OW - Old Wykehamist OWN - Oprah Winfrey Network OX - IATA code for Orient Thai Airlines OXC - Optical cross-connect OXF - IATA code for London Oxford Airport OXM - Official Xbox Magazine OXR - IATA code for Oxnard Airport OXT - Oxytocin Oy - Osakeyhtiö (Finnish, "stock company") Oyj - Julkinen osakeyhtiö (Finnish, "public stock company") OZ - (?) Australia p - pico P - Peta - Phosphorus P2P - Peer-to-peer (networking) pa - Punjabi language (ISO 639-1 code) pA - picoampere Pa- pascal,Protactinium PA-(a/i) Pamela Anderson, Panama (ISO 3166 digram),Paraguay (FIPS 10-4 country code), Partial Agonist, Pennsylvania (postal symbol),petampere, PolyAmide (Nylon),Prince Albert piercing,Public Address (vocal amplification system),Public Affairs,PA 6 - Nylon 6 (PolyAmide) (similarly for PA 11, 12, 46, 66, 610) PAA - Position Area for Artillery PAB - Panamanian balboa (ISO 4217 currency code) PABX - Private Automated Branch eXchange (company phone system) PAC- Pan Africanist Congress, Partial Solar Calibrator,Patriot Advanced Capabilities,Political action committee,(a/i) Primary Auditory Cortex PACOM - (U.S.) Pacific Command PADD- Personal Access Display Device (as seen in the Star Trek franchise),Petroleum Administration for Defense Districts, used for data collection in the U.S. petroleum industry PADI - Professional Association of Diving Instructors PAEK - PolyArylEtherKetone PAFC - Plymouth Argyle Football Club PAH - Polycyclic aromatic hydrocarbon PAHO - Pan American Health Organization PAI- PolyAmide Imide,Pre-Approval Inspection (pharma) PAK - Pakistan (ISO 3166 trigram) Pakistan - Punjab, Afghan states, Kashmir, sIndh, baluchiSTAN PAL- Phase Alternating Line (TV standard), Philippine Airlines PAM - (a/i) Precision Attack Missile Pamida - Patrick, Michael, and David, sons of the department store chain's co-founder Jim Witherspoon PAMELA- Payload for Antimatter Matter Exploration and Light-nuclei Astrophysics, Pedestrian Accessibility and Movement Environment Laboratory pan - Punjabi language (ISO 639-2 code) PAN- Panama (ISO 3166 trigram), Partai Amanat Nasional (Indonesian, "National Mandate Party") - Indonesian political party,Partido Acción Nacional (Spanish, "National Action Party") - political parties in El Salvador, Mexico, and Nicaragua,Partido de Avanzada Nacional (Spanish, "National Advancement Party") - Guatemalan political party,Personal Area Network, PolyAcryloNitrile, Programa de Asistencia Nutricional (Spanish, "Nutritional Assistance Program") - U.S. federal program for nutritional needs of poor families in Puerto Rico PANS - Pretty Advanced/Awesome Network Services (cf. POTS) PAO- Panathinaikos Athlitikos Omilos (Greek: Παναθηναϊκός Αθλητικός Όμιλος, "Pan-Athenian Athletic Club"),Public Affairs Officer PAOK - Panthessalonikeios Athlitikós Ómilos Konstantinoupoliton (Greek Πανθεσσαλονίκειος Αθλητικός Όμιλος Κωνσταντινοπολιτών, "Pan-Thessalonian Athletic Club of Constantinopolites") PAPI - Precision Approach Path Indicator (aviation) PAR - Paraguay (IOC and FIFA trigram, but not ISO 3166) PARC - Palo Alto Research Center PAROS - Prevention of an Arms Race in Outer Space (treaty) PARP - (NATO Partnership for Peace) Planning And Review Process PARWIG - Power Augmented Ram Wing In Ground (aeroplane wing shape) PAS - See entry PASA - PolyAmide, Semi-Aromatic (Nylon) PASGT - Personnel Armor System, Ground Troops PASR - Personnel Accounting and Strength Reporting PATH - Port Authority Trans-Hudson PAWS- Phased Array Warning System,Progressive Animal Welfare Society PAYD - Pay As You Drive PAYE - Pay As You Earn Pb - Lead (Latin Plumbum) PB - PolyButylene PBA- Philippine Basketball Association,Professional Bowlers Association PBB - PolyBrominated Biphenyl PBCK - Problem Between Chair and Keyboard (computer help desk in-joke) PBD - PolyButaDiene PBDE - PolyBrominated Diphenyl Ether PBI - PolyBenzImidazole PBN - PolyButylene Naphthalate PBOH - Please Become Old History PBR- Pabst Blue Ribbon (beer brand),Professional Bull Riders PBS- Pharmaceutical Benefits Scheme (Australia),Public Broadcasting Service (U.S.),Public Broadcasting Services (Malta) PBRT - may stand for: Physically Based Raytracing, an open source software rendering system for physically correct image synthesis. PBT - PolyButylene Terephthalate PBX - Private Branch eXchange (company phone system) pC - picocoulomb PC- petacoulomb,U.S. Pacific Islands Trust Territory (ISO 3166 digram; obsolete 1986), Personal computer,Player Character (roleplaying),Politically Correct / Political Correctness,post cibum (Latin, "after meals") PCAS - Planet-Crossing Asteroid Survey PCB - see entry PCC- NATO Partnership Coordination Cell,Posterior Cingulate Cortex,Pre-Command Course,Presidents Conference Committee PCCB - Porsche Ceramic Composite Brake PCCIP - President's Commission on Critical Infrastructure Protection PCE - PerChlorEthylene PCI- U.S. Pacific Islands Trust Territory (ISO 3166 trigram; obsolete 1986), Peripheral Component Interconnect (computer bus) PCIe - Peripheral Component Interconnect Express (computer bus) PCL - Passive Coherent Location PCMCIA - Personal Computer Memory Card International Association (People Can't Memorise Computer-Industry Acronyms) PCN - Pitcairn Islands (ISO 3166 trigram) PCP- phencyclidine,Pneumocystis jiroveci pneumonia (formerly Pneumocystis carinii), Probabilistically Checkable Proof PCPI - Physician Consortium for Performance Improvement (AMA) PCR - Polymerase chain reaction PCSSD - Pulaski County Special School District PCT- Pacific Crest Trail,Patent Cooperation Treaty PCTE- Portable Common Tool Environment, Punjab College of Technical Education PCZ - Panama Canal Zone (ISO 3166 trigram; obsolete 1980) Pd - Palladium PD - per diem (Latin: (calculated) by the day) - Point of Departure - Police Department - Postal District - Potential Difference - Principal Deputy - Public Domain - Privatdozent PD - Product Director—Example: CERDEC Product Director C4ISR and Network Modernization PDA - Personal Digital Assistant - Predicted Drift Angle - Public Display of Affection - Push-Down Automaton PDD - Past Due Date - Presidential Decision Directive PDF - Panama[nian] Defense Forces (abolished 1990) - Portable Document Format - Principal Direction of Fire PDG - President Director General - Product Development Group PDL - Pure Dumb Luck (Texan punk band) PDN - Pull-Down Network PDP - Programmable Data Processor - Performance Development Plan PDQ - Pre-Defined Queries (Siebel packages) - Pretty Damn Quick PDRY - People's Democratic Republic of Yemen (obsolete since 1990) PDT - Pacific Daylight [Saving] Time (UTC-7 hours) PDU - Police Dog Unit - Power Distribution Unit - Protocol Data Unit PE - Professional Engineer PE - Ice Pellets (old style METAR Code) - Peru (ISO 3166 and FIPS 10-4 country code digram) - Physical Education - Premature Ejaculation - Prince Edward Island (postal code) - Price to Earning ratio (used for equity shares) - Plant Extract PEBCAC - Problem Exists Between Chair and Computer (IT help desk in-joke) PEBKAC - Problem Exists Between Keyboard and Chair (ditto) PEEK - PolyEtherEtherKetone PEET - Partnerships for Enhancing Expertise in Taxonomy PEGIDA - Patriotische Europäer gegen die Islamisierung des Abendlandes (German, "Patriotic Europeans Against the Islamization of the West") PEI - Prince Edward Island - PolyEtherImide PEK - PolyEtherKetone PEN- Peruvian sol (ISO 4217 currency code), Poets, Essayists and Novelists, the original meaning of the initialism of the organization now known as PEN International,PolyEthylene Naphthalate PEO - Παγκύπρια Εργατική Ομοσπονδία (Greek for "Pancyprian Federation of Labour") - Philanthropic Educational Organization - PolyEthylene Oxide - Professional Employer Organization - Professional Engineers Ontario PEPFAR - President's Emergency Plan For AIDS Relief PER - Peru (ISO 3166 trigram) perl - usually lower case Practical Extraction and Report Language PES - PolyEtherSulfone PEST - UK Public Engagement with Science and Technology PET - (a/i) Personal Electronic Transactor - Pierre Elliott Trudeau - Positron Emission Tomography (as in PET scan) - PolyEthylene Terephthalate (plastic) - Preliminary English Test PETA - (a/i) pentaerythritol triacrylate - People Eating Tasty Animals - People for the Ethical Treatment of Animals PETE - PolyEthyleneTErephthalate PETP - PolyEthyleneTerePhthalate pF - picofarad PF- French Polynesia (ISO 3166 digram),petafarad, Phenol Formaldehyde (resin),Power forward, a player position in Australian rules football, basketball, and ice hockey PFD - Permanent Fund Dividend = personal flotation device PFE - Permanent Forest Estate PFLAG - Parents, Families and Friends of Lesbians and Gays ("pee-flag") PFIY - Please Fix it Yourself ("pee-fiy") PFO - Pissed, Fell Over (medical diagnosis in-joke) PfP - Partnership for Peace pg - picogram Pg - petagram PG - PGCE - Postgraduate Certificate in Education PGD - Pre-implantation Genetic Diagnosis PGENI - Pharmaco-Genetics for Every Nation Initiative PGH - Pre-implantation Genetic Haplotyping PGK - Papua New Guinea kina (ISO 4217 currency code) PGM - Precision-Guided Munition PGP - Pretty Good Privacy pH - parts of hydrogen (acidity/alkalinity index) - picohenry PH - Passive Homing (missile guidance system) - petahenry - Philippines (ISO 3166 digram) - Probability of Hit - Public Health - Purple Heart PHA - PolyHydroxyAlkanoate - Potentially Hazardous Asteroid PHL - Philippines (ISO 3166 trigram) PHQ - Patient Health Questionnaire PHP - Philippine peso (ISO 4217 currency code) - PHP: Hypertext Preprocessor (originally Personal Home Page (Tools)) pi - Pāli language (ISO 639-1 code) Pi - Pebi PI - PolyImide - PolyIsoprene - Private Investigator PIB - PolyIsoButylene PIC - Person In Charge PICNIC - Problem In Chair Not In Computer PICS - Private Investment Capital Subscription PID - Pelvic Inflammatory Disease - Plan Identification Number - Positive Identification - Procedural Identification - Procurement Identification Description PIF - (a/i) Partners in Flight PIG - Pipeline Inspection Gauge PIM - (a/i) Parameterized Ionospheric Model - Path of Intended Motion - Pediatric Index of Mortality - Personal Information Manager/Management - Presence and Interworking Mobility - Processor-In-Memory - Program Integration Manager - Protocol Independent Multicast PIN - Personal Identification Number PINF - People In Need Foundation (Czech charitable organisation) PIPA - (a/i) Program on International Policy Attitudes PIR - Priority Intelligence Requirement PIRA - Provisional Irish Republican Army PIREPS - Pilot Reports PITA - Pain In The Ass pJ - picojoule PJ - petajoule PJHQ - Permanent Joint Headquarters PJs - Pajamas ("pee-jayz") K - picokelvin PK - Pakistan (ISO 3166 and FIPS 10-4 country code digram) - petakelvin - Player Kill[er] - Probability of Kill - PolyKetone - Pulemet Kalashnikova (Russian ПК пулемет Калашникова, "Machinegun Kalashnikov")[1] PKA - Previously Known As - Professionally Known As PKE - Partnership of Kindermusik Educators [1] &[2] & [2] PKI - Public Key Infrastructure (cryptography) PKM - Pulemet Kalashnikova Modernizirovanniy (Russian ПКМ пулемет Калашникова модернизированный, "Machinegun Kalashnikov Modernised")[1] PKMS - Pulemet Kalashnikova Modernizirovanniy Stepanova (Russian ПКМС пулемет Калашникова модернизированный Степанова, "Machinegun Kalashnikov Modernised Stepanova")[1] PKMT - Pulemet Kalashnikova Modernizirovanniy Tankoviy (Russian ПКМТ пулемет Калашникова модернизированный танковый, "Machinegun Kalashnikov Modernised Tank") (a.k.a. PKTM[1]) PKR - Pakistani rupee (ISO 4217 currency code) PKT - Pulemet Kalashnikova Tankoviy (Russian ПКТ пулемет Калашникова танковый, "Machinegun Kalashnikov Tank")[1] PKTM - Pulemet Kalashnikova Tankoviy Modernizirovanniy (Russian ПКТМ пулемет Калашникова танковый модернизированный, "Machinegun Kalashnikov Tank Modernised") (a.k.a. PKMT)[1] PKU - Phenylketonuria pl - Polish language (ISO 639-1 code) pL - picolitre PL - Ice Pellets (new style METAR Code) - petalitre - Phase Line (Co-ordination Line) - Poland (ISO 3166 and FIPS 10-4 country code digram) PLAF - (a/i) People's Liberation Armed Forces - Pluggable look and feel - Product Line Architecture Framework PLAID - Precision Location and Identification PLB - Personal Locator Beacon PLC - Public Limited Company (British) PLCC - Plastic Leaded Chip Carrier (electronics) PLD - Probable Line of Deployment PLEBS - People Lacking Everyday Basic Skills PLF - Parachute Landing Fall PLGR - Precision Lightweight GPS Receiver ("plugger") pli - Pāli language (ISO 639-2 code) PLI - Position Location Information - Private Lands Initiative - Professional Liability Insurance PLIF - Planar Laser-Induced Fluorescence PLK - Polska Liga Koszykówki (Polish, "Polish Basketball League") PLKK - Polska Liga Koszykówki Kobiet (Polish, "Polish Women's Basketball League") PLL - Phase-Locked Loop (electronics) PLM - Polarized Light Microscope/Microscopy PLMBA - Phospholipid Bilayer Microarray Pln - Platoon PLN - Polish zloty (ISO 4217 currency code) PLO - Palestine Liberation Organization PLOKTA - Press Lots Of Keys To Abort PLP - Platonic Life Partner PLS - Palletized Loading System - Personal Locator System PLUTO - Pipe Line Under The Ocean PLW - Palau (ISO 3166 trigram) pm - picometre Pm - petametre - Promethium PM - Panama (FIPS 10-4 country code) - Perry Mason - Phase Modulation - Post Meridiem (Latin "after noon") - Prime Minister - Project Manager - Saint Pierre and Miquelon (ISO 3166 digram) PMC - Primary Motor Cortex PMCS - Partial Mission Capable Supply (SM&R code) - Power Management Control System - Professional Military Comptroller School PME - Professional Military Education PMI - Positive Material Identification PMID - PubMed Identifier PMMA - PolyMethylMethAcrylate PMOS - (i/a) P-type/Positive Metal-Oxide-Semiconductor transistor ("pee-moss") PMS - Premenstrual Syndrome PMSC - NATO Political-Military Steering Committee on Partnership for Peace PMSL - Piss Myself Laughing (Internet shorthand) PMT - Premenstrual Tension (UK) (see Premenstrual Syndrome) pN - piconewton PN- petanewton,Pitcairn Islands (ISO 3166 diagram) PNAC - Project for the New American Century PNC- Palestinian National Council,Palmerston North City (cf. PNC, a New Zealand rapper from this city),Pittsburgh National Corporation, one of the two companies that merged into today's PNC Financial Services,Provident National Corporation, the other company that merged into PNC Financial Services PNF - Pilot Not Flying (aviation) PNG- Papua New Guinea (ISO 3166 trigram), Portable Network Graphics PNP- Partido Nuevo Progresista,Plug 'N' Play/Pray,Positive Negative Positive PNS - Pensacola, Florida (IATA airport code) PNVS - Pilot Night Vision Sensor PNH- Paroxysmal nocturnal hemoglobinuria,Police Nationale d'Haïti (French, "National Police of Haiti"),PO[edit] Po - Polonium PO- Dust Devil (METAR Code), per os (Latin, "by mouth"), Portugal (FIPS 10-4 country code) PO - Post Office PO - Purchase Order POCD - Post-Operative Cognitive Dysfunction pod - Plain Old Documentation POD- Payable on Death (banking term, and the full name of American metal band P.O.D.),Point of divergence (alternate or counterfactual history),Port of Debarkation POE - Perl Object Environment - (b) Port Of Embarkation (c) Polyol Ester (d) Power Over Ethernet POETS - Portable Occultation, Eclipse, and Transit electronic-camera System POFF - Plain Old Flat File POG - Passionfruit, Orange and Guava POGO - Project On Government Oversight POI - Program Of Instruction POK - (a/i) Plane Of Knowledge pol - Polish language (ISO 639-2 code) POL- Petroleum, Oils and Lubricants, Poland (ISO 3166 trigram) POLAD - Political Advice POM- Program Objective Memorandum,PolyOxyMethylene POMDP - Partially observable Markov decision process POP-(a/i) Point of Presence,Post Office Protocol,Progesterone Only Pill por - Portuguese language (ISO 639-2 code) POR- Portugal (FIFA and IOC trigram, but not ISO 3166), Proposed Operational Requirement POS-(a/i) Point Of Sale terminal (retail industry transaction computers), Piece Of S**t POSH - Port Outbound Starboard Home (alleged) POSSLQ - Person of the Opposite Sex Sharing Living Quarters POT - (a/i) Plane Of Tranquility POTS- Plain Old Telephone Service (cf. PANS),Postural Orthostatic Tachycardia Syndrome POV - Point of view POW - Prisoner of war pp-pages, especially in references, e.g. "A. U. Thor, Title, Journal X, Vol. 1, no. 2 (2010) pp. 13-42." PP- Papua New Guinea (FIPS 10-4 country code), Passage Point,per procurationem (Latin, "by proxy") PPA- Parahippocampal Place Area,PolyPhthalAmide PPASC - (U.S.) Plans and Program Analysis Support Center PPASSCCATAG - "Proud Parents Against Singles, Seniors, Childless Couples And Teens And Gays", a fictional group formed by Marge Simpson PPCLI - Princess Patricia's Canadian Light Infantry (regiment) PPG- Pittsburgh Plate Glass (the original name of the company now known as PPG Industries),The Powerpuff Girls PPL- Pakistan Petroleum Limited,Pay per lead (marketing),Pennsylvania Power and Light, former name of the U.S. utility company now known as PPL,Pfadfinder und Pfadfinderinnen Liechtensteins (German, "Scouts and Guides of Liechtenstein"),Phonographic Performance Limited (UK performing rights organisation) PPLI - Precise Participant Location & Identification ppm - Parts Per Million PPM - Parts Per Million PPM - Project Planning and Management PPO - PolyPhenylene Oxide PPP- Point-to-Point Protocol,Purchasing Power Parity PPQ - Pulses Per Quarter (used in music programming, sequencers) PPQN - Pulses Per Quarter Note (ditto) PPQT - Pre-Production Qualification Test PPS- post postscriptum,Precise/Precision Positioning Service (GPS),PolyPhenylene Sulfide PPV - Pay-per-view PQ- Province of Québec (obsolete postal code, replaced by QC), Parti Québécois,PR[edit] Pr - Pastor or Priest Pr - Praseodymium PR- Public Relations, Puerto Rico (postal symbol; ISO 3166 digram) Prb - Presbyter PRBO - Point Reyes Bird Observatory PRC - People's Republic of China PRD - CERDEC Product Realization Directorate PRFG - Partial Fog (METAR Code) PRI - Puerto Rico (ISO 3166 trigram) PRK - Democratic People's Republic of Korea (ISO 3166 trigram) PRM - Personnel iness Management PRN - pro re nata (Latin, "for the emergency", "as needed") PRT- Portugal (ISO 3166 trigram), Provincial Reconstruction Team PRY - Paraguay (ISO 3166 trigram) ps- Pashto language (ISO 639-1 code),picosecond pS - picosiemens Ps - petasecond PS- Palestinian Territory, Occupied (ISO 3166 digram), Personnel Services, petasiemens, post scriptum (Latin, "written after"),Power Steering,Power Supply,Public School PooS - Poo Sniffer (Internet shorthand) PSA- Paralysis Society of America,Pharmaceutical Society of Australia,Pressure-Sensitive Adhesive,Production Services Association,Prostate Specific Antigen,Public Service Announcement,Public Service Association PSC- Personal service corporation,Primary Somatosensory Cortex PSE - Palestinian Territory, Occupied (ISO 3166 trigram) PSG - Pacific Seabird Group PSI - Pounds per square inch PSI - (a/i) Portable Source Initiative PSO- Peace Support Operations,Primary Standardisation Office (ABCA),Protocol Supporting Organization (of the ICANN) PSS - Personnel System Support PST - Pacific Standard Time (UTC-8 hours) PSU - Pennsylvania State University PSV- Philips Sport Vereniging (Dutch for "Philips Sports Union"),Public Service Vehicle PsyOp - Psychological Operations pt - Portuguese language (ISO 639-1 code) pT - picotesla Pt - Platinum PT - petatesla - Physical Training (in the Army) - Portugal (ISO 3166 digram) PTA - Parent-Teacher Association PTAL - Public Transport Accessibility Level PTAN - PTES - People's Trust for Endangered Species PTFE - PolyTetraFluoroEthylene PTI - Pardon the Interruption PTL - Patrol - Primary Target Line PTO - Patent and Trademark Office - Please Turn Over PTSD - Post-Traumatic Stress Disorder PTUI - (a/i) Plain-Text User Interface ("pa-too-ey") (cf CLI) Pu - Plutonium PU- Guinea-Bissau (FIPS 10-4 country code), Polyurethane, United States Miscellaneous Pacific Islands (ISO 3166 digram; obsolete 1986) Pub - Publication PUG - (a/i) PET Users Group PUN - (a/i) Pull-Up Network PUP - (a/i) Pull-Up Point PUR - Puerto Rico (IOC and FIFA trigram, but not ISO 3166) pus - Pashto language (ISO 639-2 code) PUS - United States Miscellaneous Pacific Islands (ISO 3166 trigram; obsolete 1986) pV - picovolt PV - petavolt PVC - Permanent Virtual Circuit - PolyVinyl Chloride - Premature Ventricular Contraction - Primary Visual Cortex PvE - Player versus Environment PvP - Player versus Player PVR - Personal Video Recorder PvZ - Plants vs. Zombies pW - picowatt PW- Palau (postal symbol; ISO 3166 digram) petawatt- PWA - Pirates With Attitude PWBA - Pension and Welfare Benefits Administration PwC - PricewaterhouseCoopers (international accounting firm) PWC - PieceWise Constant (describing a mathematical function) PWL - PieceWise Linear (describing a mathematical function) PWLC - PieceWise Linear and Concave/Convex (describing a mathematical function) PWP - Plot, What Plot? / Porn Without Plot (denotes plotless, um, "feel-good" stories in online fiction, especially fanfic or erotic fiction) PWR - Pressurized Water Reactor PWV - Pretoria-Witwatersrand-Vereeniging, the original name for the South African province now known as Gauteng, and still used to refer to the metropolitan agglomeration at the core of the province PX - Post eXchange PY - Paraguay (ISO 3166 digram) - Person-Year - Portsmouth yardstick PYF - French Polynesia (ISO 3166 trigram) PYG - Paraguayan guaraní (ISO 4217 currency code) PYMWYMI - Put Your Money Where Your Mouth Is PZ - Panama Canal Zone (ISO 3166 digram; obsolete 1980) - Pickup Zone Q1 - First Quarter Q2 - Second Quarter Q3 - Third Quarter Q4 - Fourth Quarter QA - Qatar (FIPS 10-4 country code; ISO 3166 digram) Qantas - Queensland And Northern Territory Aerial Services QAP - Quadripartite Advisory Publication ("kwapp") QAR - Qatari rial (ISO 4217 currency code) QAT - Qatar (ISO 3166 trigram) QB - Quarterback (football) QC - Quality Control - Québec (postal symbol) - Queen's Counsel QCA - Qualifications and Curriculum Authority - Quality Council of Alberta QCD - Quantum ChromoDynamics QD - quaque die (Latin, "daily") QDOS - Quick and Dirty Operating System ("cue-doss") QDR - Quadrennial Defense Review QDRO - Qualified domestic relations order ("quad-ro") QED - quantum electrodynamics - quid es demonstrata or quod erat demonstrandum (Latin, "that proves it" or "which was to be demonstrated") QEH - Queen Elizabeth's Hospital QFE - Quoted For Emphasis - Local ground level atmospheric pressure (aeronautical Q code) QID - quater in die (Latin, "four times daily") QIP - Quadrilateral Interoperability Programme (ancestor of MIP; "quip") QK - Air Canada Jazz (IATA airline designator) QLD - Queensland, (Australia) (postal symbol) QM - Quality Management - Quantum Mechanics - Queen Mother QNH - Regional mean sea level atmospheric pressure (aeronautical Q code) QPR - Queens Park Rangers F.C. (English football team) - Quality-Price Ratio (wine evaluation term) QPS - Quark Publishing System QR - Quake Rally - Qualitative Reasoning - Queensland Rail - Queen's Rangers - Quick Release - Quiet Riot - Qatar Airways (IATA airline designator) QS - quantum sufficit (Latin, "as much as suffices") QSCAT - Quick Scatterometer satellite QSL - Québec Sign Language QSO - Quasi-Stellar Object QSTAG - Quadripartite Standardization Agreement ("cue-stag") QT - Quentin Tarantino - QuickTime - QuikTrip - QT (cute) Software qu - Quechua language (ISO 639-1 code) Quango - (British Commonwealth) QUasi Autonomous Non-Governmental Organisation Quasar - Quasi-stellar radio source QUB - Queen's University Belfast que - Quechua language (ISO 639-2 code) QUIET - Q and U Imaging ExperimenT (Q and U are the Stokes parameters of the CMBR polarization) qv - quod vide (Latin "which see") QVC - "Quality, Value, Convenience" (home shopping channel) QWG - Quadripartite Working Group ("qwig") QWGAOR - Quadripartite Working Group on Army Operational Research ("qwig-a-o-r") QZ - Awair (IATA airline designator) R - Reinforcing - Right - Röntgen - Restricted (movie rating) R2I - Resistance to Interrogation R3P - Rearm, Refuel, and Resupply Point Ra - Radium RA - Radio Australia RA - Rain (METAR Code) - Rear Area - Reinforced Alert - Republican Army - Right Ascension - Royal Artillery (UK) - Royal Academy RAA - Royal Automobile Association - South Australia - Rear Assembly Area RAAF - Royal Australian Air Force Rabobank - Raiffeisen-Boerenleenbank (from the two banks that merged to form the modern company) RAC - Royal Automobile Club (in the United Kingdom, renamed RAC plc in 2002) RACK - Risk Aware Consensual Kink (SM phrase) Racon - RAdar beaCON RADA - Royal Academy of Dramatic Art Radar - Radio Detection And Ranging RADB - Real America Database - Resource Assessment Database - Reunion Address DataBase - Rice Allelopathy Data Base - Routing Arbiter Database RADb - Routing Assets Data Base RadB - Rad51/Dmc1 homologous protein RADC - Region Air Defence Commander RAE - UK Royal Aircraft Establishment (-1991) RAF - Red Army Faction - Royal Air Force RAG - Raising and Giving - Rocket Antitank Grenade RAGBRAI - Register's Annual Great Bicycle Ride Across Iowa RAM - Random Access Memory - Rolling Airframe Missile - Royal Air Maroc Ramark - RAdar MARKer RAOC - Rear Area Operation Centre RAP - (a/i) Radio Access Point - Radiological Assistance Program (U.S. Department of Energy) - Rear Area Protection - Recognised [Operating/Operational] Air Picture - Recurring Advance Payment - Relational Associative Processor - Reliable Acoustic Path - Rocket-Assisted Projectile - Rule Against Perpetuities RARDE - UK Royal Armament Research and Development Establishment (1962-1991) RARE - Rapid Acquisition with Relaxation Enhancement (MRI technique) RASC - Royal Army Service Corp - Former corps of British Army RATELO - Radiotelephone Operator Rb - Rubidium RB - Running Back (football) RBAR - Row By Agonizing Row - a derogatory way of describing a technique of scanning a set of records in a database to update or examine the contents of each one. This is the technique of last resort in most cases, since most database operations are optimized when using set based analysis instead of the RBAR method. RBCI - Radio Based Combat Identification RBI - Runs Batted In RBOC - (a/i) Regional Bell Operating Company ("Baby Bell") RC - see entry RCA- Radio Corporation of America,Root Cause Analysis,Royal Canadian Artillery,Royal City Avenue (famous entertainment zone in Thailand) RCAF - Royal Canadian Air Force RCAR - Research Council for Automobile Repairs ("are-car") RCC - Rescue Co-ordination Centre RCCO - Royal Canadian College of Organists RCHA - Royal Canadian Horse Artillery (regiment) RCMP - Royal Canadian Mounted Police RCRA - Resource Conservation and Recovery Act ("reck-ra" or "rick-ra") RCS- Radar Cross-Section,Reaction Control System,Revision Control System RCT- Randomized Controlled Trial,Robotically Controlled Telescope,Rugby club toulonnais (French, "Rugby Club of Toulon") RCZ - Rear Combat Zone RD - Radio Disney RDA- Research, Development, and Acquisition,Recommended Daily Allowance (Nutrition) RDD - Radiological Dispersion Device RDDL - (a/i) Resource Directory Description Language ("riddle") RDECOM - (U.S. Army) Research, Development and Engineering Command RDM - Remotely Delivered/Deliverable Mine RDO- Rapid, Decisive Operation,Regular Day Off,Remote Data Objects RDS- Remote Desktop Services (Microsoft service),Réseau des sports (French, "Sports Network" — Canadian French-language TV channel),Respiratory distress syndrome,Royal Dublin Society (see also RDS Arena, a stadium on the grounds often called "the RDS") RDT - Remote Digital Terminal RDV - Remote Detection Vehicle Re - Rhenium RE - Royal Engineers REACH - Registration, Evaluation, Authorisation and Restriction of Chemical Substances REACT - Remote Electronically Activated Control Technology REAM - Retired Educators Association of Minnesota RECCE - Reconnaissance REEF - Reef Environmental Education Foundation REM - (i/a) Rapid Eye Movement (sleep phase) - Rosicrucian Egyptian Museum REME - Royal Electrical and Mechanical Engineers RERC - Rehabilitation Engineering Research Center RES - Radiation Exposure Status - Reserve RESNA - Rehabilitation Engineering and Assistive Technology Society of North America REU - Réunion (ISO 3166 trigram) Rf - Rutherfordium RF - Radio Frequency - Receptive Field (neurophysiology) RFA - Restrictive Fire Area (military) - Royal Field Artillery RFC - Request for Comments - Royal Flying Corps (WWI precursor to RAF) RFD - Request for Documentation RFE - Request for Evaluation RFEF - Real Federación Española de Fútbol (Spanish for Royal Spanish Football Federation) RFF - Right of First Refusal (legal term) RFI - y For Inspection - y For Issue - Request For Information - Radio Frequency Interference RFID - Radio Frequency IDentification RFL - Rugby Football League RFL - Restrictive Fire Line (military) RFP - Request for Proposal RFQ - Request for Quotation RFT - Request for Tender RFU - Rugby Football Union Rg - Roentgenium RG - Republican Guard RGB - Red Green Blue (colour model) RGBI - Red Green Blue Intensity (ditto) Rh - Rhodium RH - Southern Rhodesia (ISO 3166 digram; obsolete 1980) RHIC - Relativistic Heavy Ion Collider RHLI - Royal Hamilton Light Infantry (Canadian militia regiment) RHO - Southern Rhodesia (ISO 3166 trigram; obsolete 1980) RHS - Right Hand Side - Redland High School - Royal Horticultural Society - London RHU - Replacement Holding Unit RHWR - Radar Homing and Warning Receiver ("raw" for short) RI - Rex et Imperator, Regina et Imperatrix King-Emperor RI - Rhode Island (postal symbol) RIAA - Recording Industry Association of America RIBA - Royal Institute of British Architects RIF- Reduction In Force (layoffs),Resistance Index for Frostbite,ing Is Fundamental RIFA - Red imported fire ant RILA - Retail Industry Leaders Association RIM- Remote integrated multiplexer, Australian term for a digital loop carrier,Research In Motion, former name of the BlackBerry company,Revolutionary Internationalist Movement (Maoist organization),Royal Indian Marine, former navy of British colonial India RIMVS - Retinal Imaging Machine Vision System RINO - Republican In Name Only[1] RIP-(a/i) Relief In Place, requiesca[n]t in pace (Latin for "may he/she/they rest in peace") RIS- Range Instrumentation System,Réseau Info Sports (French, roughly "Sports News Network" — Canadian French-language TV channel) RISC - Reduced Instruction Set Computer RISD - Rhode Island School of Design ("riz-dee") RISTA - Reconnaissance, Intelligence, Surveillance, and Target Acquisition (see also ISTAR) RWH - Rain Water Harvesting RJD - Reduced Julian Day RKBA - Right to Keep and Bear Arms (Second Amendment to the United States Constitution) RKI - Robert Koch Institute, German governmental research institute in Berlin RKO - Radio-Keith-Orpheum Pictures RL - Release Line - Real Life RLP - Recognised [Operating/Operational] Land Picture RLS - Restless Leg Syndrome RLY - Rally Point RM - see separate disambiguation page rm - Raeto-Romansh language (ISO 639-1 code) RMA - Return Mailing Authorization - Revolution in Military Affairs - Rachel McAdams RMC - Robert Menzies College RMC - (ii) Royal Military College (Australia, Canada, UK) RMDA - Records Management and Declassification Agency RMP - Recognised [Operating/Operational] Maritime Picture RMS - Rate-Monotonic Scheduling - Richard M. Stallman - Root-Mean-Square - Royal Mail Ship (e.g. RMS Titanic) rn - Rundi language (Kirundi) (ISO 639-1 code) Rn - Radon RN - Radio Netherlands RN - Royal Navy - Registered Nurse (US) RNA - RiboNucleic Acid RNAD - Royal Naval Armaments Depot (UK) RNPS - Radio Network Planning System RNZ - Radio New Zealand RNZI - Radio New Zealand International ro - Romanian language (ISO 639-1 code) RO - Range Only - Red Orchestra - Romania (ISO 3166 and FIPS 10-4 country code digram) ROA - (a/i) Rate Of Ascent ROC - (i/a) Receiver Operating Characteristic (statistics) - Regional Operations Centre - Republic Of China - Roc-A-Fella Records - Regional Organisations of Councils ROD - (a/i) Rate Of Descent - Record Of Decisions - Report Of Discrepancy ROE - Rules Of Engagement roh - Raeto-Romansh language (ISO 639-2 code) ROH - Ring of Honor ROI - Return On Investment, Republic of Ireland. ROFLOL - Rolling On the Floor Laughing Out Loud ROK - (a/i) Republic of Korea ROL - Romanian leu (ISO 4217 currency code) ROM - -Only Memory - Refuel On the Move - Royal Ontario Museum ron - Romanian language (ISO 639-2 code) RON - Romanian new leu (ISO 4217 currency code) ROP - Render Output Pipeline ROPE - Research Opportunity and Performance Evidence ROS - Reactive Oxygen Species ROTC - Reserve Officer Training Corps ("Rawt-Cee") ROU - Romania (ISO 3166 trigram) ROV - Remotely Operated Vehicle ROW - Right Of Way - Rest Of the World ROWPU - Reverse Osmosis Water Purification Unit ("roe-pew") ROZ - (a/i) Restricted Operations Zone RP- Philippines (FIPS 10-4 country code), Release Point,Role-Playing [relationship potential] RPA - Regional Plan Association RPD - Recognition-Primed Decision-making RPF - Rwandan Patriotic Front RPG- (US-CA) Regional Planning Group,Report Program Generator,Rocket Projectile Gun,Rocket-Propelled Grenade,Role-Playing Game RPL - Reverse Polish Lisp rpm - revolutions per minute RPM- Records, Promotion, Music (expansion of the title of a former Canadian music magazine),Red Hat Package Manager RPN - reverse Polish notation RPO- Radiation Protection Officer, Regular Production Option,RPR-FOM - (i/a) Realtime Platform Reference Federation Object Model ("reaper fomm") rps - revolutions per second RPV - Remotely Piloted Vehicle RQ - Puerto Rico (FIPS 10-4 territory code) RRB - Railroad Retirement Board RRN - Recurrence Rate Number RRP - Recurrent Respiratory Papillomatosis RRS - Racing Rules of Sailing RRSP - Registered Retirement Savings Plan (Canada; roughly equivalent to the IRA in the U.S.) RS - Russia (FIPS 10-4 country code) RSA- Regimental Support Area,Republic of South Africa,Rivest-Shamir-Adleman encryption, South Africa (IOC and FIFA trigram, but not ISO 3166) RSD- Reflex Sympathetic Dystrophy, Serbian dinar (ISO 4217 currency code) RSEQ - Réseau du sport étudiant du Québec (French, "Quebec Student Sports Network") RSI - Repetitive Strain Injury RSJ - Rolled Steel Joist (construction) RSN - Real Soon Now (coined by author Jerry Pournelle) RSPB - (UK) Royal Society for the Protection of Birds RSPCA - Royal Society for the Prevention of Cruelty to Animals RSR - Required Supply Rate RSRE - UK Royal Signals and Radar Establishment (1976-1991) RSRI - Red Sands Research Institute RSS - Really Simple Syndication RSTA - Reconnaissance, Surveillance, and Target Acquisition RSVP - répondez s'il vous plaît (French for "respond if you please") RT - Real Time - Radio Telephone - Return to duty RTA - Road traffic accident (British) RTBF - Radio-Télévision belge de la Communauté française RTCA - RTCA, Inc. RTF - Rich Text Format RTFM - the Fucking/Fine Manual RTG - Radio-isotope Thermoelectric Generator also used for Rubber Tyred Gantry crane RTGS - Royal Thai General System of Transcription - Real Time Gross Settlement RTI - Run-Time Infrastructure (Simulation) RTL - see entry RTLS - Return to Launch Site - period in NASA Space Shuttle assent profile where, during assent, shuttle aborts assent and turns and glides back to landing strip at launch site RTP - Real-time Transport Protocol RTS - see entry RTT - Round Trip Timing RTV - Rapid Terrain Visualization ACTD - Retro Television Network ru - Russian language (ISO 639-1 code) Ru - Ruthenium RU - Russia (ISO 3166 digram) RUB - Russian ruble (ISO 4217 currency code) RUC - Royal Ulster Constabulary run - Rundi language (Kirundi) (ISO 639-2 code) rus - Russian language (ISO 639-2 code) RUS - Russia (ISO 3166 trigram) RUSI - Royal United Services Institute for Defence Studies RV- Reconnaissance Vehicle,Recreational Vehicle,Re-entry Vehicle,reciprocation void RVD- Rijksvoorlichtingsdienst (Dutch, "Government Information Service"), Rob Van Dam (American professional wrestler),RW[edit] rw - Rwanda language (Kinyarwanda) (ISO 639-1 code) RW - Rwanda (ISO 3166 and FIPS 10-4 country code digram) RWA - Rwanda (ISO 3166 trigram) RWADA - Resident Weighted Average Daily Attendance (New York State term used in public education to indicate the size of a school district, i.e. its number of students) RWF - Rwandan franc (ISO 4217 currency code) RWR - Radar Warning Receiver RWS - Remote Weapon Station Rx - Medical prescription (possibly from Latin "recipere", "to take": see entry) RX - Receive South-Sulphur/Sulfur,S0-9[edit],S4C — Sianel Pedwar Cymru (Welsh, "Channel Four Wales"),SA[edit],sa — Sanskrit language (ISO 639-1 code) SA- Sand (METAR Code),Saudi Arabia (ISO 3166 and FIPS 10-4 country code digram), Sexaholics Anonymous, sine anno (Latin, “without year”),Situational awareness,South Africa,(i/s) South Australia (postal symbol), Standards Australia,Sturmabteilung (German, “Storm Detachment”, Nazi forerunner and rival of SS),S.A. - designation for a corporation in many European countries; see article for meanings SAA- Saudi Arabian Airlines, former name of Saudia,Sex Addicts Anonymous,South African Airways,Southern Athletic Association,Standards Association of Australia, a former name of Standards Australia,SAAB — Svenska Aeroplan AB (Swedish aircraft manufacturer; also refers to its former auto manufacturing arm),SAAFR — (a/i) Standard use Army Aircraft Flight Route (“safer”),SAAMI — Sporting Arms and Ammunition Manufacturers' Institute (“sammy”),SAARC — South Asian Association for Regional Cooperation,SAB — Soprano Alto Baritone,Sabena — Société anonyme belge d'exploitation de la navigation aérienne (French for “Belgian Company for Exploiting Aerial Navigation”, 1923-2001),SABIC — Saudi Basic Industries Corporation,SABR — Society for American Baseball Research SAC- Standards Activity Committee (of SISO),U.S. Strategic Air Command (1946-1992),SACAT — Semi Attended Customer Activated Terminal (Supermarket checkout),SACEUR — Supreme Allied Commander EURope,SACLANT — Supreme Allied Commander atLANTic,SACLOS — Semi-Automatic Command to Line of Sight SAD- Safford Regional Airport (IATA code), Seasonal Affective Disorder,Situational Awareness Display,SADD — originally Students Against Drunk Driving, now Students Against Destructive Decisions (U.S. national school-related group) SADL- Situation Awareness Data Link (“saddle”),Structural Architecture Description Language SAE- Society of Automotive Engineers[1],Stamped addressed envelope,SAFER — Steel And Foam Energy Reduction,SAFICT — Software Agents as Facilitators of Interoperability in Collective Training,sag — Sango language (ISO 639-2 code),SAG — Screen Actors Guild,SAGAT — Situation Awareness Global Assessment Technique,SAGE — Semi-Automatic Ground Environment (simulation),SAHB — Sensational Alex Harvey Band,SAIC — Science Applications International Corporation SALT-(a/i) Save A Life Today (SALT) Alert; Emergency Contact System, Southern African Large Telescope,Strategic Arms Limitation s SAM- Sequential-Access Memory,Sociedad Aeronáutica de Medellín,Surface-to-Air Missile Sambo - (p/a) Samooborona bez oruzhiya (Russian: "Самооборона без оружия", literally "self-defense without weapons") san- Sanskrit language (ISO 639-2 code), Storage Area Network SAR- Saudi riyal (ISO 4217 currency code), Search And Rescue,Special Administrative Region,Synthetic Aperture Radar SARA- Southeastern Association for Research in Astronomy,Scientific Atlanta Resident Application,Scottish Amateur Rowing Association,Southern African Railway Association,State Administration for Religious Affairs,SARP — Search And Rescue Processor,SARR — (i/a) Search And Rescue Repeater,SARS — Severe Acute Respiratory Syndrome SART- Search and Rescue Transponder,Situational Awareness Rating Technique,SARU — South African Rugby Union SAS- Scandinavian Airlines System,Second Avenue Subway,Situational Awareness System,Special Air Service,Studies, Analysis and Simulation,Side Angle Side, Statistical Analysis System (original meaning; SAS Institute Inc. has evolved far beyond that scope),SASE — Self-Addressed Stamped Envelope,SASO — Stability and Support Operations,SASOL — Suid Afrikaanse Steenkool en Oli.e. (Afrikaans, “South African Coal and Oil”) SAT- formerly Scholastic Aptitude Test and Scholastic Assessment Test; now known solely by the initials,Small Arms Trainer,SATB — Soprano Alto Tenor Bass,SATNAV — Satellite Navigation (Increasingly common GPS based system in new vehicles),SATs — Standard Assessment Tasks and other similar terms describing tests used in English schools; see National Curriculum assessment#Terminology,SAU — Saudi Arabia (ISO 3166 trigram),SAVAK — Sazamane Etelaat va Amniate Kechvar (Iranian “Security and Intelligence Service”) SAW- Squad Automatic Weapon,Surface acoustic wave,SAWE — Society of Allied Weight Engineers,SB[edit],Sb — Antimony (Latin Stibium) SB- Sexy Bitch,Sexy Bastard,Sexy Boy (disambiguation), Solomon Islands (ISO 3166 digram), Special Warfare Boat Operator SBA- Santa Barbara Airport,Simulation-Based Acquisition,Sovereign Base Area,Student bar association,SBB — German for the Swiss Federal Railways SBC- Sensotronic Brake Control,Single-Board Computer,Southern Baptist Convention,SBCCOM — U.S. Army Soldier and Biological Chemical Command (disbanded 2003),SBCS — Single-Byte Character Set,SBCT — Stryker Brigade Combat Team SBD- Solomon Islands dollar (ISO 4217 currency code),Silent But Deadly SBNO - Standing but not operating (in reference to amusement parks) SBP- Samahang Basketbol ng Pilipinas (Filipino, "Basketball Federation of the Philippines"),U.S. School Breakfast Program,Society of Business Practitioners,State Bank of Pakistan SBS- Special Boat Service,Special Broadcasting Service,Seoul Broadcasting System SBW- Sonny Bill Williams (New Zealand dual-code rugby player),SC[edit],sc — Sardinian language (ISO 639-1 code),Sc — Scandium SC- Cruiser Submarine (US Navy hull classification) c Saint Kitts and Nevis (FIPS 10-4 country code; from Saint Christopher),Seychelles (ISO 3166 digram),South Carolina (postal symbol) SCA- Service Contract Act,Sexual Compulsives Anonymous,Society for Creative Anachronism,SCAP — Supreme Commander Allied Powers (Allied occupation of Japan),sccm — Standard cubic centimetre per minute (unit of measurement of fluid flow),sccs — Standard cubic centimetre per second (unit of measurement of fluid flow),scfh — Standard cubic foot per hour (unit of measurement of fluid flow),scfm — Standard cubic foot per minute (unit of measurement of fluid flow),scfs — Standard cubic foot per second (unit of measurement of fluid flow),SCG — Serbia and Montenegro (ISO 3166 trigram; defunct since 2006),SCHIMS — Soldier Combat Helmet Identification Marking System,SCHIP — State Children's Health Insurance Program (U.S.; often pronounced "ess-chip"),SciFi — Science Fiction,sCJD — Sporadic Creutzfeldt-Jakob disease,SCM — Surface Contamination Module,SCMODS — State, County, Municipal Offender Data System,SCN — Suprachiasmatic Nucleus,SCNT — Somatic Cell Nuclear Transfer SCO- Santa Cruz Operation (initials later used by SCO Group), Scotland (FIFA trigram; not eligible for an ISO 3166 or IOC trigram), Shanghai Cooperation Organization,SCOTUS — Supreme Court of the United States,SCR — Seychelles rupee (ISO 4217 currency code),SCRAM — Safety Control Rod Axe Man SCS- Scan Correlated Shift,Soil Conservation Service SCSI- Small Computer System Interface (“scuzzy”), Strategic and Combat Studies Institute,SCT — Scattered Sky (METAR Code),SCTP — Stream Control Transmission Protocol,Scuba — Self Contained Underwater Breathing Apparatus,SCUF — Slow Continuous Ultrafiltration,SCUFN — Sub-Committee on Undersea Feature Names (of GEBCO),SD[edit],sd — Sindhi language (ISO 639-1 code) SD- Secure Digital (memory card format),Sheriff's department,Smoke/Decontamination, South Dakota (postal symbol),Sudan (ISO 3166 digram) SDC- Shaft Driven Compressor,U.S. Army Strategic Defense Command (1985-1992),SDG — Sudanese pound (ISO 4217 currency code),SDG — Sum Dum Goy - greasy spoon chinese restaurant,SDH — Synchronous Digital Hierarchy SDHC - Secure Digital High Capacity SDXC - Secure Digital eXtended Capacity SE- Seychelles (FIPS 10-4 country code), Societas Europaea (form of business organization in the EU),South-east, Sweden (ISO 3166 digram), Synthetic Environment,System Engineering,SEAD — Suppression of Enemy Air Defence,SEADI — Senior Executioner of Approved Driving Instructors,SEAFDEC — Southeast Asian Fisheries Development Center,SEAL — SEa-Air-Land,SEAT — Sociedad Española de Automóviles de Turismo (Spanish for "Spanish Touring Car Company"),SEATO — Southeast Asia Treaty Organization,SeaWiFS — Sea-Viewing Wide Field of View Sensor (satellite instrument) SEC- U.S. Securities and Exchange Commission, Security,Southeastern Conference,SECAM — Séquentiel couleur à mémoire (French for “Colour Sequential with Memory”; TV standard, cf. NTSC, PAL),SECDEF — (U.S.) Secretary of Defense,SED — CERDEC Software Engineering Directorate,SEDRIS — Synthetic Environment Data Representation and Interchange Specification,SEE — Small Emplacement Excavator,SEG — Society of Exploration Geophysicists,SEG — Special Escort Group,SEK — Swedish krona (ISO 4217 currency code),Selkent — South East London & Kent Bus Company,SELT — Single Ended Line Test (ing) SEM-(i/a) Sensor Employment Manager,Switch to Email Mode, i.e. stop texting as it is more disruptive by making a sound or vibrating and email instead, for a given time SEN- Senegal (ISO 3166 trigram), Small Extension Node SEP- Somebody Else’s Problem,Spherical Error Probable,System Enhancement Package,System Engineering Plan,SEPTA — Southeastern Pennsylvania Rapid-Transit Authority,SERE — Survival, Evasion, Resistance and Escape,SESSPE — Submarine Escape and Surface Survival Personnel Equipment,SET — Staphylococcal EnteroToxin,SETI — Search for ExtraTerrestrial Intelligence,SETAC — Society for Environmental Toxicology and Chemistry SEU- Single Event Upset (solid state physics),Slightly Enriched Uranium,Special Evidence Unit,SF[edit] SF- Fleet Submarine (retired US Navy hull classification), San Francisco,Science fiction, South Africa (FIPS 10-4 country code), Speculative fiction,Special Forces SFA- Sales force automation,Saturated fatty acid,Scottish Football Association,Stephen F. Austin (State University),Sudan Football Association SFE- Supercritical fluid extraction,Sydney Futures Exchange,SFF — Standard File Format,sf&f — Science fiction & fantasy,SFM — Switch to Facebook Mode, i.e. to message someone on Facebook instead of texting as it is less disruptive in the sense of the phone not making sound or vibrating, for a period of time,SFOB — Special Forces Operations Base,SFOR — UN Stabilisation Force (in Bosnia and Herzegovina),SFU — Simon Fraser University (Canada),SG[edit],sg — Sango language (ISO 639-1 code),Sg — Seaborgium SG- Senegal (FIPS 10-4 country code),Singapore (ISO 3166 digram),Snow Grains (METAR Code), Study Group SGC- Server Gated Cryptography, Stargate Command,SGD — Singapore dollar (ISO 4217 currency code),SGML — Standard Generalized Markup Language,SGP — Singapore (ISO 3166 trigram) SGS- South Georgia and the South Sandwich Islands (ISO 3166 trigram), Svalbard Ground Station (Landsat),Société Générale de Surveillance,SH[edit],sh — Serbo-Croatian language (ISO 639-1 code) SH- Saint Helena (ISO 3166 digram), SONATRACH (Algerian petroleum company) SHAC- Stop Huntingdon Animal Cruelty,Student Health Action Coalition,SHAPE — Supreme Headquarters Allied Powers Europe,SHF — Super High Frequency,SHN — Saint Helena (ISO 3166 trigram) SHO - Showtime (see also sho.com) SI- Slovenia (ISO 3166 and FIPS 10-4 country code digram), Socialist International,Sports Illustrated,Système International (French, International System of Units),SIA — Singapore Airlines (ICAO code),SIA — Survivors of Incest Anonymous,SIAM — Society for Industrial and Applied Mathematics,SIC — Standard Industrial Classification,SICS — (a/i) Swedish Institute of Computer Science,SIDS — Sudden infant death syndrome,SIDU — select, insert, delete, update. See Create, read, update and delete,SIF — Selective Identification Feature,SIFF — Successor IFF SIG- Schweizerische Industrie Gesellschaft (German, "Swiss Industry Company"). See also SIG Sauer, a firearms manufacturer spun off from the aforementioned company in 2000., .signature (UNIX shell/Internet standard file name),(a/i) Special Interest Group,SIGCAT — Special Interest Group for CD-ROM Applications and Technology,SIGINT — Signals Intelligence,SIGMET — Significant Meteorological Information SIIT- Saskatchewan Indian Institute of Technologies (Canadian university),Sirindhorn International Institute of Technology (Thai university),Stateless IP/ICMP Translation algorithm,SIMAC — Semantic Interaction with Music Audio Contents,SIMLAS — Soldier Integrated Multipurpose Laser System,SIMM — Single In-line Memory Module,SIMNET — SIMulator NETwork, later SIMulation NETwork,SIMNET-D - SIMNET-Developmental,SIMP — Strongly Interacting Massive Particle SIMPLE- Satellite Interactive Multimedia Platform for Low-cost Earth stations, Savings Incentive Match Plan for Employees (as used in SIMPLE IRA), Standard Interface for Multiple Platform Link Evaluation (NATO STANAG 5602),sin — Sinhalese language (ISO 639-2 code),SIN — Social Insurance Number (Canada),SINCGARS — SINgle Channel Ground and Airborne Radio System SIP- Session Initiation Protocol,State Implementation Plan,System Improvement Program,Systematic Investment Plan,SIPP — Self-Invested Personal Pension Siri - Speech Interpretation and Recognition Interface (Apple iOS software) SIRI - Service Interface for Real Time Information SISO- Simulation Interoperability Standards Organization,Society of Independent Show Organizers,SIW — Simulation Interoperability Workshop,SIYSS — Stockholm International Youth Science Seminar,SJ[edit] SJ- Svalbard and Jan Mayen (ISO 3166 digram), Societas Iesu (Latin: The Society of Jesus, the Jesuit order), Statens Järnvägar (Swedish State Railways),SJA — Staff Judge Advocate (military law),SJC — Supreme Judicial Court of Massachusetts (note: the highest court in the state of Maine is also called the Supreme Judicial Court),SJM — Svalbard and Jan Mayen (ISO 3166 trigram),SK[edit],sk — Slovak language (ISO 639-1 code) SK- Saskatchewan (postal symbol),Slovakia (ISO 3166 digram),SKC — Clear Sky (METAR Code),SKK — Slovak koruna (ISO 4217 currency code),SKM — Sikkim (ISO 3166 trigram; obsolete 1975),SL[edit],sl — Slovene language (ISO 639-1 code) SL- Sierra Leone (ISO 3166 and FIPS 10-4 country code digram), Start Line SLA- Service Level Agreement,Symbionese Liberation Army,SLAA — Sex and Love Addicts Anonymous,SLAC — Stanford Linear Accelerator Center,SLAN — sine loco, anno, nomine (Latin, “without place, year, or name”),SLAPP — Strategic lawsuit against public participation,SLB — Solomon Islands (ISO 3166 trigram),SLBM — Sea/Submarine-Launched Ballistic Missile,SLC — Scan Line Corrector,SLE — Sierra Leone (ISO 3166 trigram),SLI/SLi,(i/s) Scan-Line Interleave,Scalable Link Interface,SLIT — SubLingual ImmunoTherapy,slk — Slovak language (ISO 639-2 code),SLL — Sierra Leone leone (ISO 4217 currency code),SLO — Slovenia (IOC trigram, but not FIFA or ISO 3166) SLOC- Sea Lines Of Communication,Source Lines Of Code,SLORC — State Law and Order Restoration Council (of Burma) SLP- Sea Level Pressure, Super Long Play,slph — Standard litre per hour (air flow),slpm — Standard litre per minute (air flow),slps — Standard litre per second (air flow),SLR — Single-Lens Reflex (camera) SLT- Single Lens Translucent, Speech and language therapist, Solid Logic Technology (electronics),Swing Landing Trainer (paratroops),Secondary lymphoid tissue,slv — Slovenian language (ISO 639-2 code),SLV — El Salvador (ISO 3166 trigram),SM[edit],sm — Samoan language (ISO 639-1 code),Sm — Samarium SM- Sado-Masochism, San Marino (ISO 3166 and FIPS 10-4 country code digram), Soldier's Manual, Submarine Minelayer (US Navy hull classification),SMA — Scan Mirror Assembly,SMART — Subject Matter And Requirements Team,SMASS — Small Main-Belt Asteroid Spectroscopic Survey,SMCT — Soldier's Manual of Common Tasks,SMD — Surface Mount Device,SMDR — Station Message Detail Recording,sme — Northern Sami language (ISO 639-2 code) SME- Scan Mirror Electronics,Subject Matter Expert SMG- Sequential Motorsport Gearbox,SubMachine Gun,SMH — Shaking My Head,SMil — Sadomasochisterne i landet (Danish SM organisation),SMIL — Synchronized Multimedia Integration Language,smo — Samoan language (ISO 639-2 code),SMP — Standard Military Pattern,SM&R — Source, Maintenance, and Recoverability,SMR — San Marino (ISO 3166 trigram),SMS — many, including: Short message service; see entry,SMTP — Simple Mail Transfer Protocol,SMU — Southern Methodist University SMX-many, including: Server Macro Expansion, Solaris MINIX, Spatial multiplexing, Sulfamethoxazole; see entry SMZ-many, including: Silver Mt. Zion, Sulfamethazine, Sulfamethoxazole; see entry,SN[edit],sn — Shona language (ISO 639-1 code),Sn — Tin (Latin Stannum) SN- Senegal (ISO 3166 digram),Singapore (FIPS 10-4 country code),Snow (METAR Code),SuperNova,Screen Name,sna — Shona language (ISO 639-2 code),SNAFU — “Situation Normal — All Fouled/Fucked Up”,SNAP — Supernova/Acceleration Probe,SNCB — Société nationale des chemins de fer de Belgique (French for “Belgian Railways National Society”, NMBS in Dutch),SNCF — Société nationale des chemins de fer français (French for “French Railways National Society”),snd — Sindhi language (ISO 639-2 code),SND — Standard Nomenclature Database,SNE — Synthetic Natural Environment,SNES — Super Nintendo Entertainment System,SNÉTA — Syndicat national pour l'étude des transports aériens (French for “Aerial transport Study National Syndicate”, 1919-1923),SNG — Satellite News Gathering (television) SNL- Saturday Night Live (television), Società Navigazione del Lago di Lugano,SNM — Special Nuclear Material,SNMP — Simple Network Management Protocol,SNOBOL — StriNg Oriented symBOlic Language,SNP — Single-nucleotide polymorphism SNR- SuperNova Remnant,Signal-to-Noise Ratio,SNRI — Serotonin-Norepinephrine Reuptake Inhibitor,SNS — Spallation Neutron Source,SNU — Solar Neutrino Unit,SO[edit],so — Somali language (ISO 639-1 code) SO- Shared Object (Unix),Sheriff's Office,Significant other, Somalia (ISO 3166 and FIPS 10-4 country code digram) SOA- service-oriented architecture, Society of Actuaries, State of the art SOAP- Simple Object Access Protocol,Supplemental Offer and Acceptance Program (U.S. medical residency matching) SOB- Son Of a Bitch,Same Old Bullshit,SOC — Sector Operations Centre,SOCCSKSARGEN — South Cotabato, Cotabato, Sultan Kudarat, Sarangani, General Santos City (a region in the Philippines; pronounced “sock-sar-gen”),SOCOM — (U.S.) Special Operations Command SoCon - Southern Conference (U.S. college sports) SOD-(i/a) School Of Dentistry,Statement Of Difference[s],Statement Of Direction,Statement Of Documentation,Statement Of Duty/Duties SOE- Secret Of Evermore,Special Operations Executive (WWII British organization),State Of Emissions (EW) SOF-(a/i) Special Operations Force,Status of Forces,SOFIA — Stratospheric Observatory For Infrared Astronomy SOGAT- Society of Graphical and Allied Trades,Former British printing union,SOHC — Single-OverHead-Cam engine,SOHO — Solar and Heliospheric Observatory,SOI — Signal Operating Instruction,SOL — Shit Out of Luck,SOLIS — Synoptic Optical Long-term Investigations of the Sun,som — Somali language (ISO 639-2 code) SOM- Simulation Object Model, Somalia (ISO 3166 trigram),Sonar — SOund Navigation And Ranging SOP- Standing/Standard Operating Procedure,State of Play SOR- State Of iness,Statement Of Requirements SOS- Somali shilling (ISO 4217 currency code),Save Our Souls,SOSTAR — Stand-Off Surveillance and Target Acquisition Radar,sot — Sotho language (ISO 639-2 code),SOUTHAG — Southern Army Group,SOUTHCOM — (U.S.) Southern Command,SOV — Single Occupant Vehicle,SOW — Statement Of Work,SOWHAT — RESNA Subcommittee on Wheelchairs and Transportation,SOX — Sarbanes-Oxley Act,SP[edit] Sp- Special,Spring tide (nautical charts), sine prole (Latin, “without offspring”) SP- Security Police,Self-Propelled,Shore Patrol, Spain (FIPS 10-4 country code), Start Point,Strong Point,spa — Spanish language (ISO 639-2 code),SPAAG — Self-Propelled Anti-Aircraft Gun,SPACECOM — (U.S.) Space Command,Spaser — Surface plasmon amplification by stimulated emission of radiation,SPC — Secretariat of the Pacific Community,SPCO — Single-Pole Change Over SPD- Shimano Pedaling Dynamics,Sozialdemokratische Partei Deutschlands (Social Democratic Party of Germany),SPDT — Single-Pole Double-Throw,SPEAC — Stop Primate Experiments at Cambridge (later became SPEAK),SPECTRE — SPecial Executive for Counter-intelligence, Terrorism, Revenge and Extortion,SPEED — Subsistence Preparation by Electronic Energy Diffusion (early military microwave oven),SPIE — originally the Society for Photo-Optical Instrumentation Engineers (“SPIE — The International Society for Optical Engineering” 1981-2007, “SPIE” since 2007) SPL- Scottish Premier League,Superior Parietal Lobule,Sound Pressure Level,SPM — Saint Pierre and Miquelon (ISO 3166 trigram),SPOD — (a/i) Sea Port of Debarkation,SPOE — (a/i) Sea Port of Embarkation,SPOT — Satellite pour l'observation de la Terre (French, “Satellite for Earth Observation”),SPQR — Senatus Populusque Romanus (Latin “The Senate and the People of Rome”),sps — sine prole superstite (Latin, “without surviving issue”),SPS — Standard Positioning Service (GPS),SPST — Single-Pole Single-Throw,SQ[edit],sq — Albanian language (ISO 639-1 code),SQ — Sound Quality,SQ — Standard Quality,sqi — Albanian language (ISO 639-2 code),SQL — (i/a) Structured Query Language (“seek-well”),SQUID — Superconducting QUantum Interference Device,SR[edit],sr — Serbian language (ISO 639-1 code),Sr — Strontium SR- Sound Reinforcement,Supply Route, Suriname (ISO 3166 digram), Sveriges Radio (Swedish Radio Ltd),SR — Sustained release of a drug SRAM- Scott (King), Ray (Day), SAM (Patterson) — founders of bicycle component manufacturer SRAM Corporation, Static Random Access Memory (“ess-ram”),SR-ATGW — Short-Range Anti-Tank Guided Weapon,SRB — Solid Rocket Booster,SRBM — Short-Range Ballistic Missile (cf. IRBM, ICBM),SRC — Scheduled Removal Component,srd — Sardinian language (ISO 639-2 code) SRD- Science Requirements Document, Surinam dollar (ISO 4217 currency code),SREL — Savannah River Ecology Laboratory SRG- SACEUR Rover Group,Special Republican Guard,SRGW — Short-Range Guided Weapon SRL- Savannah River Laboratory,Single Rocket Launcher,Survival Research Labs,SRM — Specified Risk Material,srp — Serbian language (ISO 639-2 code),SRS — Savannah River Site,SRSP — Science and Religion in Schools Project,SRTP — [Secure Real-time Transport Protocol],SS[edit],ss — Swati language (ISO 639-1 code) SS- Sand Storm (METAR Code), Schutzstaffel (German, roughly "Protection Squadron"; Nazi elite Praetorian guard), U.S. Secret Service,Spanish Ship,Stainless steel,Stockholm Skins, Submarine (US Navy hull classification), Super Sport,Surface-to-Surface (missile) SSA- Cargo Submarine (US Navy hull classification), Social Security Administration (U.S.),Statistics South Africa,SSB — Single-sideband modulation,SSB — Sacramento Sustainable Business,SSBN — Nuclear-Powered Ballistic Missile Submarine (US Navy hull classification) SSC- Safe, Sane, Consensual (SM phrase),Secondary Somatosensory Cortex,Smaller-Scale Contingency,U.S. Army Soldiers System Center (Natick, Massachusetts),Superconducting Super Collider,SSCCATAGAPP — Singles, Seniors, Childless Couples, And Teens And Gays Against Parasitic Parents (fictional organization from The Simpsons) SSD- Solid-state drive, South Sudan (ISO 3166 trigram),SSDC — U.S. Space and Strategic Defense Command SSDD- Same Shit, Different Day,Single-Sided Double-Density (floppy disk) SSE- South South-East, Streaming SIMD Extensions,SSG — Guided Missile Submarine (retired US Navy hull classification),SSGN — Nuclear-Powered Guided Missile Submarine (US Navy hull classification),SSH — Saffir-Simpson Hurricane scale,SSK — Hunter-Killer Submarine (retired US Navy hull classification),SSKP — Single-Shot Kill Probability,SSL — Secure Sockets Layer,SSM — Surface-to-Surface (Guided) Missile SSN- Nuclear-Powered Attack Submarine (US Navy hull classification), SIM Serial Number,Social Security Number (U.S.),Socialist Solidarity Network,Subsystem number (SCCP, SS7),SSNW — Same Shit, New Wrapping,SSO — Submarine Oiler (retired US Navy hull classification),SSP — Submarine Transport (retired US Navy hull classification) SSR- Radar Picket Submarine (retired US Navy hull classification), Solid State Recorder SSRI- Selective Serotonin Reuptake Inhibitor,Social Systems Research Institute SSRN- Social Science Research Network, Nuclear-Powered Radar Picket Submarine (retired US Navy hull classification) SSS- Siding Spring Survey,Side Side Side (an acronym for remembering congruent triangles), Sigue Sigue Sputnik (band),S/SSM — Surface-to-Subsurface Missile SST- SuperSonic Transport, Training Submarine (US Navy hull classification),Saturated Suction Temperature (refrigeration cycles),SSTO — Single-Stage To Orbit,SSV — Soft-Skinned Vehicle (i.e., unarmoured),ssw — Swati language (ISO 639-2 code),SSW — South South-West,ST[edit],st — Sotho language (ISO 639-1 code) ST- Saint Lucia (FIPS 10-4 country code),São Tomé and Príncipe (ISO 3166 digram) STA- Scheduled Time of Arrival,Surveillance and Target Acquisition,STAG — (U.S.) Strategy and Tactics Group,STAGE — Scenario Toolkit And Generation Environment,STANAG — (NATO) Standardisation Agreement STAR- Scientific and Technical Aerospace Reports (NASA),Simulation of Tactical Alternative Responses,Special Threat Analysis and Recognition STAT- Signal Transducers and Activators of Transcription (cell biology),Special Tertiary Admissions Test (Australia) STB - Surface Transportation Board[2] STD- São Tomé and Príncipe dobra (ISO 4217 currency code), Sexually Transmitted Disease,STDM — Statistical Time Division Multiplexing,STENTOR — Satellite de télécommunications pour expérimenter de nouvelles technologies en orbite (French, “Orbital New Technology Experimental Telecommunications Satellite”) STFU- Southern Tenant Farmers Union,Stuff You[citation needed],STH — Sonic The Hedgehog STI- Sexually Transmitted Infection,Subaru Tecnica International,STK — Satellite Tool Kit,STM — Short Term Memory,STOL — Short Take-Off and Landing,STOVL — Short Take-Off and Vertical Landing STP- São Tomé and Príncipe (ISO 3166 trigram), Standard Temperature and Pressure,STR — Short Tandem Repeat (DNA analysis),STRATCOM — United States Strategic Command STRICOM- U.S. Army Simulation, Training & Instrumentation Command (1992-),Strike Command (1962-1971),STRIVE — Synthetic Tactical Real-time Interactive Virtual Environment,STSM — Senior Technical Staff Member,Stuka — Sturzkampfflugzeug (German WWII dive bomber),SU[edit],su — Sundanese language (ISO 639-1 code) SU- Soviet Union (ISO 3166 digram; obsolete 1992),Sudan (FIPS 10-4 country code),SUB — Student Union Building,SuD — Subject under Discussion,SUDC — Swedish United Dawah Center, a salafist Islamic organisation in Sweden SUI- Sonic user interface, Switzerland (IOC and FIFA trigram, but not ISO 3166),SUK — Start Up Kit,sun — Sundanese language (ISO 639-2 code),SUN — ,Soviet Union (ISO 3166 trigram; obsolete 1992),Stanford University Network that led to Sun Microsystems,SUNY — State University of New York (usually pronounced “sue-knee”),SUR — Suriname (ISO 3166 trigram),SURTASS — Surveillance Towed Array Sensor System,SUSAT — Sight Unit Small Arms, Trilux,SUV — Sport Utility Vehicle,SV[edit],sv — Swedish language (ISO 639-1 code) SV- El Salvador (ISO 3166 digram), Sportverein (German for “Sport Association”, as in Hamburger SV and SV Werder Bremen),SVC — Secondary Visual Cortex,SvD — Svenska Dagbladet (Swedish newspaper) SVD- Singular Value Decomposition,Snaiperskaya Vintovka Dragunova (Снайперская винтовка Драгунова, Russian for “Dragunov Sniper Rifle”),SVG — Scalable Vector Graphics,SVK — Slovakia (ISO 3166 trigram),SVM — Support Vector Machine (artificial intelligence),SVN — Slovenia (ISO 3166 and FIFA trigram),SVO — subject-verb-object,SVR — Sluzhba Vneshney Razvedki (Служба Внешней Разведки, Russian for "Foreign Intelligence Service"),SW[edit],sw — Swahili language (ISO 639-1 code) SW- South-West ordinal direction,Sweden (FIPS 10-4 country code), Shortwave,swa — Swahili language (ISO 639-2 code) SWA-(i/a) Secure Web Access,South-West Asia,SWAC — Southwestern Athletic Conference,SWALK — Sealed With A Loving Kiss,SWAN — System for Wearable Audio Navigation,SWAP — Surface Waters Acidification Programme,SWAPO — South-West Africa People's Organisation,SWAT — Special Weapons And Tactics,swe — Swedish language (ISO 639-2 code),SWE — Sweden (ISO 3166 trigram) SWF- Shockwave Flash file (“swiff”),Single White Female SWG- Surface Warfare Group,Symbology Working Group,SWHR — Society for Women's Health Research,SWIG — Simplified Wrapper and Interface Generator,SWIR — (a/i) Short Wave InfraRed (“ss-why-are” or “swhirr”) SWLABR- She Was Like A Bearded Rainbow,Cream song (Bruce, Clapton and Baker),SWORD — Subjective WORkload Dominance,SWORDS — Special Weapons Observation Reconnaissance Detection System,SWOT — Strengths, Weaknesses, Opportunities, Threats (mnemonic) SWP- Special Working Party (“swipp”),Systematic Westing Plan (a plan of periodic westing of shares or mutual funds worth a fixed amount of money),Skill With Prizes (UK pub quiz machines — quality titles include: Pub Quiz, Quiz City, Frog in a Liquidizer, Who Wants To Win a Tenner?),SWT — Sea Water Tank,SWV — Sisters With Voices (American female R&B vocal group),SWZ — Swaziland (ISO 3166 trigram),SX[edit],SX — Sonic X SXM- Scanning X-ray Microscope, Sint Maarten (ISO 3166 trigram), Stream X-Machine,SY[edit],SY — Syria (ISO 3166 and FIPS 10-4 country code digram),SYC — Seychelles (ISO 3166 trigram),SYP — Syrian pound (ISO 4217 currency code),SYR — Syria (ISO 3166 trigram),Syriza — Synaspismós Rizospastikís Aristerás (Greek Συνασπισμός Ριζοσπαστικής Αριστεράς,"Coalition of the Radical Left"),SysML — System Modeling Language,Sysop — System Operator,SZ[edit] SZ- Swaziland (ISO 3166 digram),Switzerland (FIPS 10-4 country code),SZL — Swaziland lilangeni (ISO 4217 currency code),References[edit],^ Society of Automotive Engineers,^ Replaced Interstate Commerce Commission on January 1st, 1996,v,t,e,List of acronyms,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,Retrieved from "https://en.wikipedia.org/w/index.php?title=List_of_acronyms:_S&oldid=694527511",Categories: Lists of abbreviationsHidden categories: All articles with unsourced statementss with unsourced statements from December 2015,Navigation menu,Personal tools,Not logged inContributionsCreate accountLog in,Namespaces,,,,,,,View history, T - Tera - Tesla - Tritium ta - Tamil language (ISO 639-1 code) Ta - Tantalum TA - Target Acquisition - Teaching Assistant - Tera-ampere - Territorial Army (UK) - Tristan da Cunha (ISO 3166 digram) TAA - Transparency Anti-Aliasing - Trans Australia Airlines TAACOM - U.S. Theater Army Area Command TAADCOORD - Theatre Army Air Defence Co-ordinator TAAR - Trace Amine-Associated Receptor TAC - U.S. Tactical Air Command (1946-1992) TACAMO - Take Charge and Move Out (U.S. military) TACAN - Tactical Air Navigation TACC - Tactical Air Control Centre - (USAF) Tanker Airlift Control Center TACCO - Tactical Coordinator TACCSF - U.S. Theater Aerospace Command & Control Simulation Facility TACDAR - Tactical Detection And Reporting TACP - Tactical Air Control Party - Technology Applications Certification Program TACSOP - Tactical SOP (Standing Operating Procedure) TADIL - Tactical Digital Information Link TADL - Tactical Air Data Link ("taddle") TADSS - Training Aids, Devices, Simulators, and Simulations tah - Tahitian language (ISO 639-2 code) TAI - Target[ed] Area of Interest TAJ - Tom and Jerry TAJT - Tom and Jerry Tales TALES - Technical Advice and Lexicon for Enabling Simulation tam - Tamil language (ISO 639-2 code) TAN - Tanzania (IOC and FIFA trigram, but not ISO 3166) TANJ - There Ain't No Justice (used as expletive in the Ringworld novels) TANP - Terrain-Aware Network Planner TANSTAAFL - There Ain't No Such Thing As A Free Lunch (coined by author Robert A. Heinlein in his The Moon Is a Harsh Mistress) TAPPS - Texas Association of Private and Parochial Schools TARDIS - Time And Relative Dimension In Space (from Doctor Who) TARP - Transparency Accountability Rights for Parents (coined by Karen Plumridge, founder of Black Ribbon Gold Heart) TAROT - Télescope à action rapide pour les objets transitoires (French, "Transient Object Rapid Action Telescope") TAS - Tasmania (postal symbol) TASER - Thomas A. Swift's Electric Rifle TASM - Tactical Air-to-Surface Missile tat - Tatar language (ISO 639-2 code) TAT - Tourism Authority of Thailand TATP - TriAcetone TriPeroxide TATT - Tired All The Time (medical diagnosis in-joke) Tb - Terbium TB - Tuberculosis TBA - to be announced TBBPA - TetraBromoBisPhenol-A TBC - to be confirmed, to be continued TBD - "to be documented", "to be determined", or "to be decided" TBD - Torpedo Boat Destroyer TBF - to be fair TBGRI - Tropical Botanic Garden and Research Institute, India TBH - To Be Honest TBL - Turkish Basketball League TBM - Tactical Ballistic Missile - Theatre Ballistic Missile TBS - Turner Broadcasting System TBT - Tributyltin Tc - Technetium TC - Teracoulomb - Turks and Caicos (ISO 3166 digram) - United Arab Emirates (FIPS 10-4 country code; from Trucial Coast States) TCA - Transformational Communications Architecture - Turks and Caicos (ISO 3166 trigram) TCAS - Traffic Collision Avoidance System TCAA - Top Counter-Assault Agents TCCCS - (i/a) Tactical Command, Control and Communication System ("ticks") TCD - Chad (ISO 3166 trigram) TCG - Trusted Computing Group - Türkiye Cumhuriyeti Gemisi TCHD - Truck Cargo Heavy Duty TCL - Tool Command Language TCM - Turner Classic Movies TCP - Traffic Control Point - Transmission Control Protocol - Trichlorophenol TCU - Texas Christian University TCWMS - Tele-Center Workforce Management System TCW - Tasty Coma Wife TD- Territorial Decoration,Toon Disney,Toronto-Dominion (Bank); see also its U.S. subsidiary, TD Bank, N.A.,Touchdown,Tower Defence A game type, involves defending waves of enemies using tower TDA - The Disney Afternoon TDL - Tactical Data Link TDM - Time-Division Multiplexing TDMA - Time Division Multiple Access TDP - Technology Demonstration Programme TDRS - Tracking Data and Relay Satellite te - Telugu language (ISO 639-1 code) Te - Tellurium TE - Tactical Exploitation - Testosterone to Epitestosterone ratio - Tight end (American football; position generally not used in modern Canadian football) TEAL - Tasman Empire Airways Limited Team - Together everyone achieves more TEAMS - The East African Marine System (fiber optic cable) TED - Technology Entertainment Design prize TEETH - Tried Everything Else, Try Homeopathy (medical diagnosis in-joke) tel - Telugu language (ISO 639-2 code) TEL - (a/i) Transporter, Erector and Launcher TELAR - Transporter, Erector, Launcher And Radar TEMO - Training, Exercise, and Military Operations TENCAP - Tactical Exploitation of National Capabilities TERS - Tactical Event Reporting System TES - Tactical Event System TEST - Thesaurus of Engineering and Scientific Terms TEU - Twenty-foot equivalent unit (cargo capacity) TeVeS - Tensor Vector Scalar theory TF - TFMPP - Trifluorophenylmethylpiperazine TFR - Total Fertility Rate TFT - Thin-Film Transistor tg - Tajik language (ISO 639-1 code) Tg - Teragram TG - Togo (ISO 3166 digram) TGA - Tonga (IOC and FIFA trigram, but not ISO 3166) TGB - Tres grande bibliothèque (French, "Very Large Library"), a sarcastic nickname for the Bibliothèque nationale de France TGIF - Thank God It's Friday, Toes Go In First tgk - Tajik language (ISO 639-2 code) tgl - Tagalog language (ISO 639-2 code) TGO - Togo (ISO 3166 trigram) TGT- Target (also the ticker symbol for Target Corporation), Ticket Granting Ticket (computer security), Tyrese, Ginuwine, Tank - see TGT (group) for their collaboration TGV- Tanjong Golden Village (Malaysian cinema chain), Tanora malaGasy Vonona (Malagasy, "Young Malagasies Determined" - political party), Test Generation with Verification,Train à grande vitesse (French for "High-Speed Train"),TH[edit] th - Thai language (ISO 639-1 code) Th - Thorium TH - Terahenry - Thailand (ISO 3166 and FIPS 10-4 country code digram) tha - Thai language (ISO 639-2 code) THA - Thailand (ISO 3166 trigram) THAAD - (a/i) Terminal High Altitude Area Defence THB - Thai baht (ISO 4217 currency code) THEGENTRY - The High-End Group of Earth's New Technologies Research Yield THEL - Tactical High Energy Laser ACTD THG - Tetrahydrogestrinone ti - Tigrinya language (ISO 639-1 code) Ti - Tebi - Titanium TI - Tajikistan (FIPS 10-4 country code) - Thermal Imaging - Threat Identification - Training Instructor - Texas Instruments TIA - Total Information Awareness initiative TIA - Transient Ischemic Attack TIALD - Thermal Imaging and Airborne Laser Designation TIBS - Tactical Information Broadcast System TIC - Troops In Contact TID - Target Identification - ter in die (Latin, "three times daily") TIGERS - Topologically Integrated Geographic Encoding and Referencing System TIM - Technical Information Memorandum - Technical Interchange Meeting - Toxic Industrial Material - Telecom Italia Mobile TIMS - Tactical Internet Management System - The Institute of Management Sciences - The International Molinological Society - Thermal Infrared Multispectral Scanner - Thermal Ionization Mass Spectrometry - Travel Information Management Services - Tuberculosis Information Management System TINC - There Is No Cabal TINY - That Is, Not You (internet slang) TIP - Thermal Identification Panel tir - Tigrinya language (ISO 639-2 code) tits - Toes in the Sand TJ - Tajikistan (ISO 3166 digram) - Terajoule TJD - Truncated Julian Day TJK - Tajikistan (ISO 3166 trigram) TJS - Tajik somoni (ISO 4217 currency code) tk - Turkmen language (ISO 639-1 code) TK - Terakelvin - Tokelau (ISO 3166 digram) TKBL - Türkiye 1. Kadınlar Basketbol Ligi, the Turkish-language name of the Turkish Women's Basketball League TKL - Tokelau (ISO 3166 trigram) TKM - Turkmenistan (ISO 3166 trigram) tl - Tagalog language (ISO 639-1 code) Tl - Thallium TLPM - T1 Line Performance Monitor TL- Team Leader, Teralitre,Timor-Leste (ISO 3166 digram), ThermoLuminescence,TL;DR - Too long; didn’t read. TLATOJL - The Life and Times of Juniper Lee TLA - Three-Letter Abbreviation/Acronym TLAM - Tomahawk Land Attack Missile TLAR- That Looks About Right (chat shorthand),Transporter-Launcher And Radar TLC- Tender Loving Care,The Learning Channel (now known strictly by the initials),Thin Layer Chromatography,T-Boz, Lefteye, Chilli,Tables, Ladders, and Chairs (type of professional wrestling match) TLD- Thermoluminescent Dosimeter,Top-Level Domain TLM- Traditional Latin Mass,Tridentine Latin Mass,Transaction Lifecycle Management TLS- Timor-Leste (ISO 3166 trigram), Times Literary Supplement,TM[edit] Tm- Terametre Thulium- TM- Technical Manual,Theatre Missile,Thematic Mapper, trademark (often written in small superscript type: TM or ™), Turing machine, Turkmenistan (ISO 3166 digram) Tympanic Membrane TMA- Terminal Manoeuvring Area (restricted flying zone),Texas Medical Association,Tristeza y muerte de agave (Spanish, "wilting and death of agave") - a disease affecting the blue agave, from which the popular spirit tequila is produced TMAP - (a/i) Texas Medication Algorithm Project TMC - The Movie Channel TMD - Theatre Missile Defence TMDK - The Mighty Don't Kneel (Australian professional wrestling stable also active in Japan) TMI - Too Much Information TMJ - TemporoMandibular Joint (syndrome) TMM - Turkmen manat (ISO 4217 currency code) TMNT - Teenage Mutant Ninja Turtles TMO- Table Mountain Observatory,Television match official (rugby union) TMP- East Timor (ISO 3166 trigram; obsolete 2002), Temporary TMPG - Transparent Multi-Platform Gateway TMR - Twin Main Rotors (helicopter type) TMS - Transcranial Magnetic Stimulation TMT - Thirty Meter Telescope TMTOWTDI - There's Than One Way To Do It (from Perl) TMZ - Thirty-Mile Zone, an area in and around Los Angeles considered "local" under entertainment industry union work rules tn - Tswana language (ISO 639-1 code) TN- Tennessee (postal symbol),Teranewton,Tonga (FIPS 10-4 country code),Tunisia (ISO 3166 digram) TNA - Total Nonstop Action Wrestling TND - Tunisian dinar (ISO 4217 currency code) TNO - Trans-Neptunian Object TNT- Thomas Nationwide Transport, an Australian company that was one of the predecessors to the former TNT N.V. and the current TNT Express, TriNitroToluene,(a/i) Turner Network Television,TO[edit] to - Tongan language (ISO 639-1 code) TO- Togo (FIPS 10-4 country code),Tonga (ISO 3166 digram) TOA- Table Of Authorities,Total Obligation Authority (accounting) TOAD- Temporary, Obsolete, Abandoned, or Derelict site (urbanism),Towed Optical Assessment Device TOBS - Time of OBServation TOC-(a/i) Table Of Contents,Tactical Operations Centre, Temporo-Occipital transition Cortex,Top of Concrete,To-do - To-do-List TOG - Togo (IOC and FIFA trigram, but not ISO 3166) TOGS - Thermal Observation Gunnery Sight TOMS - Total Ozone Mapping Spectrometer (satellite instrument) ton - Tongan language (ISO 639-2 code) TON - Tonga (ISO 3166 trigram) TOP - Tongan pa'anga (ISO 4217 currency code) TOS- Tape Operating System,Terms of service,The Original Series, used to distinguish the first Star Trek TV series from other parts of the media franchise,Tramiel Operating System TOT - Time On Target TOW - Tube-launched, Optically tracked, Wire-guided (anti-tank missile) TP- East Timor (ISO 3166 digram; obsolete 2002),São Tomé and Príncipe (FIPS 10-4 country code), Training Practice,Trident Ploughshares TPE - Chinese Taipei (IOC and FIFA trigram for the country also known as Taiwan) TPI - The point is TPO - Thrombopoietin TPS - The Pennington School TPTB - The Powers That Be (often used to refer to the people responsible for the content of TV series or movies) TQ - Top Qualifier (similar to Pole Position in car racing) tr - Turkish language (ISO 639-1 code) TR - Turkey (ISO 3166 digram) TRA - Technology iness Assessment TRAC - (U.S. Army) TRADOC Analysis Center TRACON - Terminal Radar Approach Control TRADOC - (U.S. Army) Training and Doctrine Command TRAIN - Tourist Railway Association, Inc. TRANSCOM - U.S. Transportation Command TRAP - Tactical Receive equipment and related Applications TRASANA - TRADOC Systems Analysis Agency TRD - Towed Radar Decoy TRIGAT - Third Generation Antitank (missile) TRL - Technology readiness level Trp - Troop TRP - Target Reference Point - Time of Reporting TRU - Transuranic TRUEX - Training in Urban Environment Exercise TRW - Thompson Ramo Wooldridge Inc. TRY - Turkish lira (ISO 4217 currency code) ts - Tsonga language (ISO 639-1 code) Ts - Terasecond TS- Terasiemens,Thunderstorm (METAR code),Tunisia (FIPS 10-4 country code), TinySex,Transsexual, "Tough Sh*t" TSA- Theatre Storage Area,Time Slot Allocation,Transportation Security Administration,The Salvation Army TSCA - Toxic Substances Control Act ("tosca") TSEC - Transmission Security Encryption Code TSL - Transportation Security Laboratory tsn - Tswana language (ISO 639-2 code) TSN- The Sporting News (historic name of the periodical now known as Sporting News),The Sports Network tso - Tsonga language (ISO 639-2 code) TSO- The Stationery Office (was HMSO until 1996),(U.S.) TRICARE Support Office, Trans-Siberian Orchestra (band) TSOP- Tactical Standing Operation Procedure,The Sound of Philadelphia (classic 1970s R&B instrumental) TSR - many, including Terminate and Stay Resident; see entry TSSIA - The Subject Says It All tt - Tatar language (ISO 639-1 code) TT- Teratesla, Terrestrial Time,Tourist Trophy (Motorcycle sport), Trinidad and Tobago (ISO 3166 digram) TTCT - Torrance Tests of Creative Thinking TTD - Trinidad and Tobago dollar (ISO 4217 currency code) TTO - Trinidad and Tobago (ISO 3166 trigram) TTFN - Ta Ta For Now TTL- Tax, Title, License, Through-the-lens (photography),Time 'till live,Time to live,Transistor-transistor logic TTP- Tactics, Techniques, and Procedures,Thrombotic thrombocytopenic purpura,Trailer Transfer Point TTTEAF - Thomas the Tank Engine and Friends TTY - TeleTYpewriter (Printer) TTYL - To You Later (Internet slang) TTZ - Tetrazolium TU - Technische Universität (German for "Technical University") - Thammasat University (Thailand) - Turkey (FIPS 10-4 country code) TUC - Trades Union Congress TUG - TeX Users Group TUI - (a/i) Text-based user interface (cf. CLI), among other uses tuk - Turkmen language (ISO 639-2 code) TUN - Tunisia (ISO 3166 trigram) TUNS - Technical University of Nova Scotia Tur - Turkish language (ISO 639-2 code) TUR - Turkey (ISO 3166 trigram) TUSK - Tank Urban Survival Kit TUV - Tuvalu (ISO 3166 trigram) Tv - Time value, a designation seen on some camera dials for shutter priority mode TV- Television, Teravolt, Transvestite, Tuvalu (ISO 3166 and FIPS 10-4 country code digram) TVA - Tennessee Valley Authority TVG-(p/i) Television Games (Network), Tick, Very Good, Often used by School Teachers when marking homework etc. (Tick VG)[1][2] TVR - TreVor (Wilkinson) Racing TVS - Tornado vortex signature tw - Twi language (ISO 639-1 code) TW - Republic of China (Taiwan) (ISO 3166 and FIPS 10-4 country code digram) - Terawatt TWAIN - Technology Without An Interesting Name TWD - Taiwan dollar (ISO 4217 currency code) TWE - Trans World Entertainment twi - Twi language (ISO 639-2 code) TWI - The Welding Institute TWN - Republic of China (Taiwan) (ISO 3166 trigram) TWP - Technical Working Paper TWS - Thermal Weapon Sight - Track While Scan TWIP - Take What Insurance Pays - When a surgeon agrees to accept a lower payment than he ordinarily would for a procedure and not charge the patient the difference TX - Texas (postal symbol) - Transmit - Turkmenistan (FIPS 10-4 country code) TXV - Thermostatic Expansion Valve ty - Tahitian language (ISO 639-1 code) TYT - Take Your Time - Internet chat abbreviation TZ - Tanzania (ISO 3166 and FIPS 10-4 country code digram) TZA - Tanzania (ISO 3166 trigram) TZC - Tetrazolium chloride TZS - Tanzanian shilling (ISO 4217 currency code) U - Uranium UA - Ukraine (ISO 3166 digram) Unit of Action UAAP - University Athletic Association of the Philippines UAB - University of Alabama at Birmingham UAE - (i/s) United Arab Emirates (also IOC and FIFA trigram, but not ISO 3166) UAH- Ukrainian hryvnia (ISO 4217 currency code), University of Alabama in Huntsville UAR- Uniformly At Random (probability),Unión Argentina de Rugby (Spanish for "Argentine Rugby Union"),United Arab Republic UAV- Unmanned Aerial Vehicle,Unprotected Anal and Vaginal sex,UB[edit] UBC - United Baptist Church - University of British Columbia UBIGEO - Ubicación Geografica (Spanish for Geographical Location) UBS - Unbundled Bitstream Services - United Bank of Switzerland - United Banque Suisse UCBSA - United Cricket Board of South Africa UCAV - (a/i) Unmanned Combat Air Vehicle UCF - University of Central Florida UCI - Union Cycliste Internationale (French, "International Cycling Union") - University of California, Irvine UCLA - University of California, Los Angeles UCLES - University of Cambridge Local Examinations Syndicate UCR - University of Costa Rica - University of California, Riverside UCS - Union of Concerned Scientists UCSB - University of California, Santa Barbara UCSD - University of California, San Diego UDAS - Uppsala-DLR Asteroid Survey UDDI - Universal Description, Discovery and Integration UDP - User Datagram Protocol UDT - Underwater Demolition Team UDTS - Uppsala-DLR Trojan Survey UE - Unit of Employment UEFA - Union of European Football Associations UEFI - (i/a) Unified Extensible Firmware Interface UESAC - Uppsala-ESO Survey of Asteroids and Comets UFC - Ultimate Fighting Championship UFO - Unidentified Flying Object - United Farmers of Ontario ug - Uyghur language (ISO 639-1 code) UG - Uganda (ISO 3166 and FIPS 10-4 country code digram) UGA - Uganda (ISO 3166 trigram) UGV - Unmanned Ground Vehicle UGX - Ugandan shilling (ISO 4217 currency code) UHF - Ultra High Frequency UHMW - Ultra-High Molecular Weight UHRB - Ultra-High Resolution Building (simulation) UIC - University of Illinois at Chicago UID - User ID uig - Uyghur language (ISO 639-2 code) UIL - University Interscholastic League (governing body for most interscholastic activities, notably sports, in Texas public high schools) UIUC - University of Illinois at Urbana-Champaign UJTL - Universal Joint Task List uk - Ukrainian language (ISO 639-1 code) UK - United Kingdom (also FIPS 10-4 country code) - University of Kentucky UKIP - United Kingdom Independence Party ukr - Ukrainian language (ISO 639-2 code) UKR - Ukraine (ISO 3166 trigram) UL - Underwriters Laboratories ULEB - Union des ligues européens de basket-ball, French for "Union of European Basketball Leagues" ULF - Ultra Low Frequency UM - U.S. Minor Outlying Islands (postal symbol; ISO 3166 digram) UMBC - University of Maryland, Baltimore County UMC - United Microelectronics Corporation - University of Missouri-Columbia UMCP - Unit Maintenance Collection Point UMES - University of Maryland Eastern Shore UMI - U.S. Minor Outlying Islands (ISO 3166 trigram) UMIST - University of Manchester Institute of Science and Technology UMK - Uniwersytet Mikołaja Kopernika (Polish "Nicolaus Copernicus University") UML - Unified Marxist-Leninist Communist Party of Nepal - Unified Modeling Language - University of Massachusetts Lowell - User-Mode Linux UMTS - Universal Mobile Telecommunications System UN - United Nations UNABOM - University and airline bomber (FBI case name) UNAIDS - (i/a) Joint United Nations Programme on HIV/AIDS UNaM - (p/a) Universidad Nacional de Misiones (Spanish, "National University of Misiones") UNAM - Universidad Nacional Autónoma de México (Spanish, "National Autonomous University of Mexico") UNAMSIL - United Nations Mission in Sierra Leone UNCF - United Negro College Fund UNCLOS - United Nations Convention on the Law of the Sea UNCSGN - United Nations Conference on the Standardization of Geographical Names UNCTAD - United Nations Conference on Trade and Development UNDCP - United Nations Drug Control Programme UNDE - (i/a) Union of National Defence Employees (Canada) UNDP - United Nations Development Programme UNEP - United Nations Environment Programme UNESCO - United Nations Educational, Scientific and Cultural Organization UNFCCC - United Nations Framework Convention on Climate Change UNFICYP - United Nations Peacekeeping Force in Cyprus UNGEGN - United Nations Group of Experts on Geographical Names UNHCR - United Nations High Commission (er) for Refugees UNICEF - United Nations Children's Fund (originally the United Nations International Children's Emergency Fund) UNICRI - United Nations Interregional Crime and Justice Research Institute UNIDO - United Nations Industrial Development Organization UNIFEM - United Nations Development Fund for Women (from the French Fonds de développement des Nations unies pour la femme) UNIS - University of Surrey, Guildford, England UNLV - University of Nevada, Las Vegas UNMIK - United Nations Interim Administration Mission in Kosovo UNMOVIC - United Nations Monitoring, Verification and Inspection Commission UNOSOM - United Nations Operations in Somalia UNPROFOR - United Nations Protection Force (in former Yugoslavia) UNRISD - United Nations Research Institute for Social Development UNSM - Union of Nova Scotian Municipalities UNTAC - United Nations Transitional Authority in Cambodia UNTAET - (i/a) United Nations Transitional Administration in East Timor UNU - United Nations University UP- Ukraine (FIPS 10-4 country code),Union Pacific Railroad (AAR reporting mark), Upper Peninsula (of Michigan),Uttar Pradesh UPC- United Pentecostal Church, Universal Product Code UPdM - Università Popolare della Multimedialità UPDM- Uganda People's Democratic Movement,Unified Modeling Language Profile for DoDAF and MoDAF,Unité de psychiatrie du développement mental,Universal Pattern Decomposition Method,Unix Power Device Management,Unpressurized Docking Mast,Urban Planning, Design and Management UPF - Universitat Pompeu Fabra (Catalan, "Pompeu Fabra University") UPI - United Press International UPN - United Paramount Network UPS- Uninterruptible Power Supply,United Parcel Service UPTN- Universal Personal Telecommunications Number,Upper Peninsula Telehealth Network UPU - Universal Postal Union ur - Urdu language (ISO 639-1 code) UR - Soviet Union (NATO country code, obsolete 1992) URBSFA - Union royale belge des sociétés de football association (French for Royal Belgian Football Association) urd - Urdu language (ISO 639-2 code) URD - User Requirements Document URI- Uniform Resource Identifier,University of Rhode Island URL - (a/i) Uniform Resource Locator ("earl") URU - Uruguay (IOC and FIFA trigram, but not ISO 3166) URY - Uruguay (ISO 3166 trigram) US - United States (also ISO 3166 and FIPS 10-4 country code digram) USA- United States of America (also ISO 3166 trigram),United States Army USAADAC - U.S. Army Air Defense Artillery Center, Fort Bliss, Texas USAARMC - U.S. Army ARMor Center, Fort Knox, Kentucky USAAVNC - U.S. Army AViatioN Center, Fort Rucker, Alabama USAF - United States Air Force USAFSPC - U.S. Air Force Space Command USAIC- U.S. Army Infantry Center,U.S. Army Intelligence Center USAID - (a/i) United States Agency for International Development USAP- Union Sportive des Arlequins Perpignanais, United States Antarctic Program USAPATRIOT - Uniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism USAREUR - United States Army Europe USB - Universal Serial Bus USC- United States Code,University of South Carolina,University of Southern California USCG - United States Coast Guard USCINCSPACE - United States Commander in Chief, Space Command USD- (U.S.) Under-Secretary of Defense* USD(A&T), (U.S.) Under-Secretary of Defense (Acquisition and Technology), United States dollar (ISO 4217 currency code),USD(AT&L) - (U.S.) Under-Secretary of Defense for Acquisition, Technology, and Logistics,USD(C) - (U.S.) Under-Secretary of Defense (Comptroller) USDA - United States Department of Agriculture USDI - United States Department of the Interior USDOE - United States Department of Energy USDRE - (U.S.) Under-Secretary of Defense for Research and Engineering (1978-1986) USEC - United States Enrichment Corporation USFL - United States Football League USFWS - United States Fish and Wildlife Service USGS - United States Geological Survey USIA - United States Information Agency USJFCOM - United States Joint Forces Command USL- United Soccer League, a third-level U.S. league. Not to be confused with an earlier league of the same name.,United Soccer Leagues, the organization that operates the above league, plus several other lower-level leagues,University of Southwestern Louisiana, a former name for the school now known as the University of Louisiana at Lafayette USMC - United States Marine Corps USMNT - United States men's national (soccer) team USN - United States Navy USNA - United States National Arboretum - United States Naval Academy USNB - United States Naval Base USNG - United States National Grid USNH - United States Naval Hospital USNI - United States Naval Institute USNO - U.S. Naval Observatory USNOFS - United States Naval Observatory Flagstaff Station USNP - United States Newspaper Program USNR - United States Navy Reserve USNS - United States Naval Ship USNY - University of the State of New York (usually pronounced "use-knee") USNZ - University Sport New Zealand USPS - United States Postal Service USPTO - United States Patent and Trademark Office USR- Universal System Resources (/usr, directory in a *NIX filesystem), User USS - United States ship (sometimes meaningless; see Star Trek) USSPACECOM - United States Space Command USSR - Union of Soviet Socialist Republics UST - Underground Storage Tank USTRANSCOM - United States Transportation Command USWNT - United States women's national (soccer) team UT - Universal Time UTEP - (a/i) University of Texas at El Paso (pronounced you-tep) UTM - Universal Transverse Mercator (geographical co-ordinate system) UU - Unitarian Universalism - University of Utah - Unseen University UUA - Unitarian Universalist Association UUID - Universally Unique Identifier (see also GUID) UUV - Unmanned Underwater Vehicle UV - Burkina Faso (FIPS 10-4 country code; from Upper Volta) - ultraviolet UVM- Universal Verification Methodology, Universidad del Valle de México, University of Vermont, from its Latin name of Universitas Viridis Montis ("University of the Green Mountains"), UV mapping,UW[edit] UW - University of Washington UWO - University of Western Ontario UWT - Under Water Telephone UWTG - Under Water Tug UWW - United World Wrestling UXO - Unexploded Ordnance UY - Uruguay (ISO 3166 and FIPS 10-4 country code digram) UYU - Uruguayan peso uruguayo (ISO 4217 currency code) uz - Uzbek language (ISO 639-1 code) UZ - Uzbekistan (ISO 3166 and FIPS 10-4 country code digram) uzb - Uzbek language (ISO 639-2 code) UZB - Uzbekistan (ISO 3166 trigram) UZS - Uzbek som (ISO 4217 currency code) V - 5 (in Roman numerals) - Vanadium - Volt VA - Vatican City-State (ISO 3166 digram) - Veterans Affairs (U.S. Department of) - Virginia (postal symbol) - Various Artists VACIS - Vehicle And Container Inspection System VACIS - Victorian Ambulance Clinical Information System VANOS - Variable Nockenwelle System VAO - Vienna Art Orchestra VASIS - Visual Approach Slope Indicator System (aviation) VAT - Value-Added Tax - Vatican City-State (ISO 3166 trigram) VB - Victoria Bitter (beer) - Visual Basic VBA - Visual Basic for Applications VC - Saint Vincent and the Grenadines (FIPS 10-4 country code; ISO 3166 digram) - Victoria Cross VCDS - (Canada) Vice-Chief of the Defence Staff - VAG-COM Diagnostic System vCJD - Variant Creutzfeldt-Jakob Disease VCJCS - Vice Chairman, Joint Chiefs of Staff VCNO - (U.S.) Vice Chief of Naval Operations VCR - Video cassette recorder VCofS - Vice Chief of Staff VCT - Saint Vincent and the Grenadines (ISO 3166 trigram) VD - North Vietnam (ISO 3166 digram, obsolete 1977) - Venereal Disease VDFS - VisualSVN Distributed File System (VDFS) VDMOS - (i/a) Vertical Double-diffused MOS transistor ("vee-dee-moss") VDOT - (i/a) Virginia Department of Transportation ("vee-dot") VDR - North Vietnam (ISO 3166 trigram, obsolete 1977) ve - Venda language (ISO 639-1 code) VE - Venezuela (FIPS 10-4 country code; ISO 3166 digram) VEB - Venezuelan bolívar (ISO 4217 currency code) VEEGA - Venus Earth Earth Gravity Assist manœuvre ven - Venda language (ISO 639-2 code) VEN - Venezuela (ISO 3166 trigram) VERDI - Vittorio Emanuele Re D'Italia (Victor Emmanuel, King of Italy) VERITAS - Very Energetic Radiation Imaging Telescope Array System VFA- Victorian Football Association (historic Australian rules football league), Volatile Fatty Acid VfD - s for deletion (used in Wikipedia) VFL - Victorian Football League, the name of two distinct Australian rules football leagues: VFM - Value For Money VFMO - Very Fast Moving Object (astronomy) VFR - Visual Flight Rules VFT - Virtual Function Table VFW - Veterans of Foreign Wars VG - British Virgin Islands (ISO 3166 digram) VGB - British Virgin Islands (ISO 3166 trigram) VH1 - (a/i) Video Hits One VHF - Very High Frequency vi - Vietnamese language (ISO 639-1 code) VI - 6 (in Roman numerals) - British Virgin Islands (FIPS 10-4 territory code) - U.S. Virgin Islands (postal symbol; ISO 3166 digram) - vide infra (Latin, "see below") - Virtual Instrument (LabVIEW) VIA - Versatile Interface Adapter VIC - Victoria, Australia (postal symbol) - Video Interface Chip - Virginia Intermont College VIDS - Visual Information Display System vie - Vietnamese language (ISO 639-2 code) VII - 7 (in Roman numerals) VIII - 8 (in Roman numerals) VIN - (i/a) Vehicle Identification Number (ISO 3779) VIP - see entry VIR - U.S. Virgin Islands (ISO 3166 trigram) - Virgin Atlantic Airways (ICAO code) VIS - Vavoua International School - Vienna Independent Shorts - Viewable Image Size - Visual Instruction Set VISCII - VIetnamese Standard Code for Information Interchange VIT - Vellore Institute of Technology VIVO - Video In Video Out VJ - Video Jockey VK - Australia (ham radio code) - Västerbottens-Kuriren, a Swedish daily newspaper VLA - Very Large Array - (UK) Veterinary Laboratories Agency VLAD - (a/i) Vertical Line Array DIFAR VLBA - Very Long Baseline Array VLF - Very Low Frequency VLIW - Very Long Instruction Word VLPFC - VentroLateral PreFrontal Cortex VLPMC - VentroLateral PreMotor Cortex VLSF - Very Loud, Stink-Free VLSI - Very-large-scale integration VLVS - Very Loud, Very Stinky VM - Vietnam (FIPS 10-4 country code) VMASC - (i/a) Virginia Modeling Analysis & Simulation Center ("vee-mask") VMF - Variable Message Format VMF - Marine Fighting Squadron of the United States Marine Corps VMN - VentroMedial Nucleus (neurophysiology) VN - Vietnam (ISO 3166 digram) VND - Vietnamese đồng (ISO 4217 currency code) VNIR - Visible and Near InfraRed VNM - Vietnam (ISO 3166 trigram) VNS - see entry VOA - Voice of America vo - Volapük language (ISO 639-1 code) VOC - Vereenigde Oostindische Compagnie (Dutch East India Company) - Volatile organic compounds VOIP - Voice Over Internet Protocol vol - Volapük language (ISO 639-2 code) VOLT - Visual OpenType Layout Tool Volvo - Swedish supplier of commercial vehicles owned by Ford Motor Company. "Volvo" means "I roll" in Latin. VON - Victorian Order of Nurses VOR - VHF Omnidirectional Ranging VOR - Voice of Russia VOX - Voice Operated oscillator VP - (a/i) Vice-President ("veep") VPN - Virtual Private Network VQ - Vector Quantization - U.S. Virgin Islands (FIPS 10-4 territory code) VR - Virtual Reality VRSG - Virtual Reality Scene Generator VS - Very Special (brandy grade) - vide supra (Latin, "see above") VSAT - Very Small Aperture Terminal ("vee-satt") VSHORAD - Very Short Range Air Defence VSO - Voluntary Services Overseas VSOP - Variations séculaires des orbites planétaires (French, "Planetary Orbit Secular Variations") - Very Small Outline Package (integrated circuit) - Very Superior Old Pale (brandy grade) - VLBI Space Observatory Programme VSR - Very Special Relativity VT- Vatican City-State (FIPS 10-4 country code),Vermont (postal symbol), Video tape,Virginia Tech VTC - Video Tele-Conference VTEC - Variable valve Timing and Electronic lift Control VTOL - Vertical Take-Off & Landing VU - Vanuatu (ISO 3166 digram) - Vedanta University VUB - Vrije Universiteit Brussel (Belgian university) VUT - Vanuatu (ISO 3166 trigram) VUV - Vanuatu vatu (ISO 4217 currency code) VV - Via Voice - Village Voice VVAF - Vietnam Veterans of America Foundation VW - Volkswagen VZ - Verizon Communications (NYSE code) vzw - vereniging zonder winstoogmerk (Dutch "non-profit organisation") W - Tungsten (from German Wolfram) - Watt - West W3C - World Wide Web Consortium wa - Walloon language (ISO 639-1 code) WA- Namibia (FIPS 10-4 country code; from West Africa),Washington state (postal symbol),Western Australia (postal symbol), World Archery (Federation) WAAC - Women's Army Auxiliary Corps (Britain) (World War I UK) WAAF - Women's Auxiliary Air Force (World War II UK) WAC- Western Athletic Conference, Women's Auxiliary Corps (World War II Canada),Women's Army Corps (World War II U.S.) WACC - Weighted Average Cost of Capital (accounting) WACS - What-A-Cartoon! Show WAD - Weapons Alert Designator WAGGGS - World Association of Girl Guides and Girl Scouts WAGs - Wives And Girlfriends (most notably of England national football team players at the 2006 FIFA World Cup, although the term existed earlier) WAK - Wake Island (ISO 3166 trigram, obsolete 1986) WAL - see entry WAN - Wide area network WAP - Wireless Application Protocol WAPIMA - What a pain in my ass WAR - With All Respect WAsP - Short form of WAAAAP (Wind Atlas Analysis and Application Program) WASP- White Anglo-Saxon Protestant,Wide Angle Search for Planets,Women Airforce Service Pilots WAYP - White And Yellow Pages Wb - Weber WB - Warner Bros. - Welcome Back (Internet shorthand) WBA- Warner Bros. Animation,West Bromwich Albion (F.C.),World Boxing Association WBC - World Boxing Council WBE - Work Breakdown Element WBO - World Boxing Organization WC - Water Closet - Winston Churchill - World Cup (sports) WCBO - World Chess Boxing Organisation WCBP - World Center for Birds of Prey WCL - World Confederation of Labour WCS - Weapon Control Status - Wildlife Conservation Society WCW - World Championship Wrestling WDC - Western Design Center - World Data Center WDWR - Walt Disney World Resort WDIN - Wildlife Disease Information Node WEBS - Weapon Effectiveness Battle Simulation WEC - World Extreme Cagefighting WEEE - Waste Electrical and Electronic Equipment WEF - World Economic Forum WEM - West Edmonton Mall WEU - Western European Union WEZ - (a/i) Weapon Engagement Zone WF - Wallis and Futuna Islands (ISO 3166 digram) WFC - Women's Forage Corps (World War II UK) WFD - Weapon of Focused Destruction WFF - Wallops Flight Facility WFP - World Food Program WFZ - Weapons Free Zone WFI - Water for Injection WG - Working Group - Wade-Giles WH - Wehrmacht Heer (German World War II army vehicle licence plate code) WHAM - Wisconsin Hydrogen-Alpha Mapping (telescope) WHI - Women's Health Initiative WHIP - Walks plus hits per inning pitched WHO - World Health Organisation WHS - (U.S.) Washington Headquarters Services WI - Western Sahara (FIPS 10-4 country code) - Wisconsin (postal symbol) - Women's Institute WIA - Wounded In Action - Wireless Institute of Australia (Amateur Radio) WIIFM - What's in it for me? WIMP - Weakly Interacting Massive Particle - Windows, Icons, Menus, Pointers WIPO - (a/i) World Intellectual Property Organization WIPP - [Nuclear] Waste Isolation Pilot Plant WIYN - Wisconsin Indiana Yale NOAO telescope consortium WK - Wake Island (ISO 3166 digram, obsolete 1986) WKYP - Will Keep You Posted WL - Wehrmacht Luftwaffe (German World War II air force vehicle licence plate code) WLB - Women's Land Brigade (World War II Canada) WLF - Wallis and Futuna Islands (ISO 3166 trigram) wln - Walloon language (ISO 639-2 code) WLOG - Without Loss Of Generality (see WOLOG) WM - Wehrmacht Marine (German World War II navy vehicle licence plate code) WMANUS - West Midlands Area National Union of Students WMD - Weapon[s] of Mass Destruction - World Movement for Democracy † WMI - Wildlife Management Institute WMO - World Meteorological Organization WNA - World Nuclear Association WNF - "Will Not Fix" WNL - Medical initialism for "Within Normal Limits" WNIT - Women's National Invitation Tournament WNSD - What's New, Scooby-Doo? WNW - West North-West wo - Wolof language (ISO 639-1 code) WO - Warrant Officer WOF - Width of Fabric WOFT - Waste Of Fucking Time WOFTAM - Waste Of Fucking Time And Money WOI - (a/i) Wheels Of Italy wol - Wolof language (ISO 639-2 code) WOM - Write Only Memory WOS - Wilson Ornithological Society WOSM- World Organization of the Scout Movement,Worldwide Oil Spill Model WOT - Waste Of Time WP - White Phosphorus (ammunition) WPB - War Production Board during World War II WPE - World Pork Expo WPK - Wider Peacekeeping WPT - World Poker Tour - World Premiere Toons WR - Wide Receiver (football) WRAC - Women's Royal Army Corps (World War II UK) WRAIR - Walter Reed Army Institute of Research WRBWWRM - "We Best What We Most" WRC - World Rally Championship WRC - World Religions Conference WRNS - Women's Royal Naval Service (World War II UK) (pronounced "wrens") WRVS - Women's Royal Voluntary Service, now only known by the acronym (UK) WRS - Worldwide Reference System WRT - Writer Response Theory WRT - "With respect to", especially in fields such as Mathematics. WRT - World Rally Team WRT - Wallace Roberts & Todd, LLC (Urban Planning and Design) WRT - Wireless Ronin Technologies (digital signage) WRT - NHS Workforce Review Team WRT - The Linksys routers whose model name start with 'WRT' WRT - Wholesale, Trade, Retail sector, category in employment and economics statistics WRT - Wireless Receiver/Transmitter ( computer networks/IT ) WRT - Third party firmware for the Linksys WRT routers and compatible models from other vendors. WRT - Web Runtime (WRT) is a portable application framework developed by Nokia that allows the creation of widgets on the S60 Platform. WS- Samoa (ISO 3166 and FIPS 10-4 country code digram; from the country's former name of Western Samoa), Writer to the Signet (a Scottish solicitor) WSC - Weapon System Catalogue WSDL - Web Services Description Language WSJ - (The) Wall Street Journal WSL- White Star Line (shipping company),Women's Super League, used to describe England's top women's association football league and top women's rugby union competition,Workers' Socialist League (UK political party) WSM- Samoa (ISO 3166 trigram; from Western Samoa), Winchester Short Magnum (family of rifle cartridges) WSMR - (a/i) White Sands Missile Range ("whiz-murr") WSROC - Western Sydney Regional Organisation of Councils WSSM - Winchester Super Short Magnum (family of rifle cartridges) WST- Water Soluble Tetrazolium (assay), Samoan tālā (ISO 4217 currency code) WSTC - Women Signallers Territorial Corps (World War II UK) WSW - West South-West WTB - Wales Tourism Board - Warenterminbörse Hannover WTB - Want to Buy (a commonly used phrase in the online game "World of Warcraft") WTC - World Trade Center WTF - What the fuck?; also What a Terrible Failure (android) WTFH - What The Fucking Hell WTH - What the Hell WTO - World Trade Organization WTS - Want to Sell (a commonly used phrase in the online game "World of Warcraft") WU - Wabash University - Washington University in St. Louis - Western Union - Windows Update - Work unit - WU Wien (German Wirtschaftsuniversität Wien, Vienna University of Economics and Business Administration) WUU2 - What you up to - Internet slang popular with teenagers. WUBU2 - What you been up to WV - West Virginia (postal symbol) WVA - World Veterinary Association WVIAC - West Virginia Intercollegiate Athletic Conference WVR - Women's Volunteer Reserve (World War II UK) WVSC - Women's Volunteer Service Corps (World War II Canada) WVU - West Virginia University WVUIT - West Virginia University Institute of Technology (note, however, that the initialism is almost never used; the popular name of the school is "WVU Tech") WW - see entry WWE - World Wrestling Entertainment WWF- World Wide Fund for Nature, from its original name of World Wildlife Fund, which remains the legal name in the U.S. and Canada,World Wrestling Federation WWI - World War I WWII - World War II WWIII - World War III WWJD - "What would Jesus do?" WWS - Wheaton Warrenville South High School WWV - Wagner-Werk-Verzeichnis (catalog of the works of Richard Wagner, and callsign of NIST's shortwave radio station in Fort Collins, Colorado) WWW - World Wide Web WWWF - World Wide Wrestling Federation WXO - Weather [Executive] Officer WY - Wyoming (postal symbol) WYSIWYG - What You See Is What You Get (pronounced "wizzy-wig". See entry for derived acronyms) WYSIWYP - What You See Is What You Print / What You See Is What You Pay ("wizzy-whip") WZ - Swaziland (FIPS 10-4 country code) XAF - BEAC (Banque des états de l'Afrique centrale) Central Africa CFA (Coopération financière en Afrique centrale) franc (ISO 4217 currency code) XAG - Silver Troy ounce (ISO 4217 currency code) XAU - Gold Troy ounce (ISO 4217 currency code) XBA - European Composite Unit (EURCO; Bonds market unit) (ISO 4217 currency code) XBB - European Monetary Unit (E.M.U.; Bonds market unit) (ISO 4217 currency code) XBML - eXtended Business Modelling Language XC - Ninety (in Roman numerals) XCBL - XML Common Business Library XCD - East Caribbean dollar (ISO 4217 currency code) XD - Used in chatrooms or email for smiley face. X is the eyes; squinted D is the mouth; XD. Xe - Xenon XF - Automobile made by Jaguar - Truck made by DAF Trucks - IATA code for Vladivostok Air XFA - XML Forms Architecture XFC - Xtreme Fighting Championships XFD - Fighter aircraft made by Douglas Xfe - X File Explorer XFF - X-Forwarded-For XFG - Exfoliation glaucoma XFH - 1932 rototype U.S. Navy fighter aircraft made by Hall - X-ray fluorescence holography XFN - XHTML Friends Network - IATA code for Xiangyang Liuji Airport XFR - Automobile made by Jaguar XFT - X FreeType interface library XFW - IATA code for Hamburg Finkenwerder Airport XG - Automobile made by Hyundai XGA - Extended Graphics Array XGE - Xoreax Grid Engine - Signal for "I Surrender" XGG - IATA code for Gorom Gorom Airport XGN - IATA code for Xangongo Airport XGP - Extreme Game Player XGR - IATA code for Kangiqsualujjuag (Georges River) Airport xh - Xhosa language (ISO 639-1 code) xho - Xhosa language (ISO 639-2 code) XHTML - eXtensible Hypertext Markup Language XHR - eXtra high Image resolution - XMLHTTPRequest XI - Eleven (in Roman numerals) XII - Twelve (in Roman numerals) XIII - Thirteen (in Roman numerals) XIV - Fourteen (in Roman numerals) XIX - Nineteen (in Roman numerals) XJ - Automobile made by Jaguar - Automobile made by Jeep XJL - Amphibian aircraft made by Columbia - Automobile made by Jaguar XJS - Automobile made by Jaguar XK - Automobile made by Jaguar - Automobile made by Jeep - Kell blood group precursor XKA - IATA code for Kantchari Airport XKB - X keyboard extension XKE - Automobile made by Jaguar XKH - IATA code for Xieng Khouang Airport XKR - Automobile made by Jaguar XKS - IATA code for Kasabonika Airport XKY - IATA code for Kaya Airport XL - eXtra Large - Forty (in Roman numerals) XML - eXtensible Markup Language XMSF - eXtensible Modelling and Simulation Framework XN - Christian - Nordic Patent Institute XNA - IATA code for Northwest Arkansas Regional Airport - X-No-Archive - Xeno Nucleic Acid XNC - X Northern Captain XNN - IATA code for Xining Caojiabao Airport XNS - Xerox Network Systems - Extensible Name Service - Christians XNU - X is Not Unix XO - Χριστιανός Ορθόδοξος (Xristianos Orthodoksos, Greek for "Eastern Orthodoxy") - eXecutive Officer - eXtra Old (brandy grade) XOF - BCÉAO (Banque centrale des états de l'Afrique de l'Ouest) West African CFA (Communauté financière d'Afrique) franc (ISO 4217 currency code) XP - eXperience Point (role-playing games) XPD - Palladium Troy ounce (ISO 4217 currency code) XPF - CFP franc (ISO 4217 currency code) XPT - Platinum Troy ounce (ISO 4217 currency code) XQJ - XQuery API for Java™ XQP - IATA code for Quepos La Managua Airport XQU - IATA code for Qualicum Beach Airport XRML - eXtensible Rights Markup Language XS - Xiaolin Showdown XSL - eXtensible Style Language XTMH - eXtreme Technology Multiprocessor Hyperlanguage XUL - XML User Interface Language XV - Fifteen (in Roman numerals) XVI - Sixteen (in Roman numerals) XVII - Seventeen (in Roman numerals) XVIII - Eighteen (in Roman numerals) XWB - (Airbus A350) "Extra Wide Body" XWF - Xcitement Wrestling Federation XWM - X window manager XWN - eXtended WordNet XWS - X Window System XX - Twenty (in Roman numerals) XXX - Hardcore pornography (film rating) - Thirty (in Roman numera XYA - IATA code for Yandina Airport Xyl - Xylobium XZA - IATA code for Zabré Airport XZN - Triple square screw driver y - Yocto- Y - Yotta - Yttrium Y2K - Year Two Thousand yA - Yoctoampere Ya - Yottayear YA - Yottaampere - Young Adult YAC - (a/i) Youth-Adult Committee YAFLA - Yet Another Five Letter Abbreviation YAP - Young Aspiring Professional YaBPr - Yet another Brother Pat rant YABSLAG - Yet another boy singing like a girl Yb - Ytterbium YB - Youcef Benzouada (Southern Algerian name) yC - Yoctocoulomb YC - Yottacoulomb YD - People's Democratic Republic of Yemen (ISO 3166 digram, obsolete 1990) YDS - Yosemite Decimal System (climbing) YE - Yemen (ISO 3166 digram) YEM - Yemen (ISO 3166 trigram) - Manitowaning/Manitoulin East Municipal Airport IATA airport code YER - Yemeni rial (ISO 4217 currency code) yF - Yoctofarad YF - Yottafarad yg - Yoctogram Yg - Yottagram Ygo - Yu-Gi-Oh! YGCO - Yamaneko Group of Comet Observers yH - Yoctohenry YH - Yottahenry YHS - Ya Hoor sur! YHBT - You Have Been Trolled YHIH1 - You Heard It Here First (lowercase: yhih1, pronounced yi-hi) YHII - You Have It Inside yi - Yiddish language (ISO 639-1 code) Yi - Yobi YI - Serbia and Montenegro (deprecated FIPS 10-4 country code, now RB (Serbia) and MJ (Montenegro)) yid - Yiddish language (ISO 639-2 code) Yippie - Youth International Party + suffix yJ - Yoctojoule YJ - Yottajoule yK - Yoctokelvin YK - Yottakelvin YKYFCW - You know you're from Christchurch when (post-earthquake joke) yL - Yoctolitre YL - Yottalitre ym - Yoctometre Ym - Yottametre YM - Yemen (FIPS 10-4 country code) - Your Magazine (originally Young Miss, later Young & Modern) YMCA - Young Men's Christian Association YMD - People's Democratic Republic of Yemen (ISO 3166 trigram, obsolete 1990) YMMD - You Make My Day YMMV - Your Mileage May Vary (adapted from EPA's automobile mileage estimates, used as an idiom to convey "results may vary" yN - Yoctonewton YN - Yottanewton yo - Yoruba language (ISO 639-1 code) YO - former Yugoslavia (NATO country code, obsolete 1993) YOLO - You Only Live Once yor - Yoruba language (ISO 639-2 code) YPA - Yards per Pass Attempt (football statistic) YPG - Yekîneyên Parastina Gel (Kurdish, "People's Protection Units" or "People's Defense Units") YPIO - Your Problem Is Obvious YPO - Young Presidents' Organization ys - Yoctosecond yS - Yoctosiemens Ys - Yottasecond YS - Yottasiemens YSA- Single adult (LDS Church),Young Socialist Alliance,Youth Service America YSI - Young Scots for Independence yT - Yoctotesla YT - Mayotte (ISO 3166 digram) - Yottatesla - Yukon Territory (postal symbol) YTD - Year-To-Date YTM - Yield to Maturity YTS - Youth Training Scheme YTT - Yoshi Topsy-Turvy YU - York University - former Yugoslavia (ISO 3166 digram, obsolete 2003) YUG - former Yugoslavia (ISO 3166 trigram, obsolete 2003) Yuppie - Young Urban Professional + suffix yV - Yoctovolt YV - Yottavolt yW - Yoctowatt YW - Yottawatt YWCA - Young Women's Christian Association YWMV - Your Wallet May Vary (to convey "our budgets are different as far as what is affordable / justifiable") YYH - YuYu Hakusho z - Zepto Z - Zetta za - Zhuang languages (ISO 639-1 code) zA - Zeptoampere ZA - South Africa (ISO 3166 digram) - Zambia (FIPS 10-4 country code) - Zettaampere ZAF - South Africa (ISO 3166 trigram) ZAMS - Zero age main sequence ZAR - South African rand (ISO 4217 currency code) - Zaire (ISO 3166 trigram, obsolete 1997) ZAS - (i/a) Zylinder Abschaltung System ZBT - Zero-Balance Transfer (accounting) zC - Zeptocoulomb ZC - Zettacoulomb ZCM - (n) ZENworks Configuration Management ZCMK - Zone Control Master Key ZCU - Zimbabwe Cricket Union