IRI	label	definition
http://purl.obolibrary.org/obo/RO_0002208	parasitoid of	A parasite that kills or sterilizes its host
http://purl.obolibrary.org/obo/RO_0002209	has parasitoid	inverse of parasitoid of
http://purl.obolibrary.org/obo/RO_0002227	obligate parasite of	A sub-relation of parasite-of in which the parasite that cannot complete its life cycle without a host.
http://purl.obolibrary.org/obo/RO_0002228	facultative parasite of	A sub-relations of parasite-of in which the parasite that can complete its life cycle independent of a host.
http://purl.obolibrary.org/obo/RO_0002235	stem parasite of	A parasite-of relationship in which the host is a plant and the parasite that attaches to the host stem (PO:0009047)
http://purl.obolibrary.org/obo/RO_0002236	root parasite of	A parasite-of relationship in which the host is a plant and the parasite that attaches to the host root (PO:0009005)
http://purl.obolibrary.org/obo/RO_0002237	hemiparasite of	A sub-relation of parasite-of in which the parasite is a plant, and the parasite is parasitic under natural conditions and is also photosynthetic to some degree. Hemiparasites may just obtain water and mineral nutrients from the host plant. Many obtain at least part of their organic nutrients from the host as well.
http://purl.obolibrary.org/obo/RO_0002437	biotically interacts with	An interaction relationship in which at least one of the partners is an organism and the other is either an organism or an abiotic entity with which the organism interacts.
http://purl.obolibrary.org/obo/RO_0002438	trophically interacts with	An interaction relationship in which the partners are related via a feeding relationship.
http://purl.obolibrary.org/obo/RO_0002439	preys on	An interaction relationship involving a predation process, where the subject kills the target in order to eat it or to feed to siblings, offspring or group members
http://purl.obolibrary.org/obo/RO_0002440	symbiotically interacts with	A biotic interaction in which the two organisms live together in more or less intimate association.
http://purl.obolibrary.org/obo/RO_0002441	commensually interacts with	An interaction relationship between two organisms living together in more or less intimate association in a relationship in which one benefits and the other is unaffected (GO).
http://purl.obolibrary.org/obo/RO_0002442	mutualistically interacts with	An interaction relationship between two organisms living together in more or less intimate association in a relationship in which both organisms benefit from each other (GO).
http://purl.obolibrary.org/obo/RO_0002443	interacts with via parasite-host interaction	An interaction relationship between two organisms living together in more or less intimate association in a relationship in which association is disadvantageous or destructive to one of the organisms (GO).
http://purl.obolibrary.org/obo/RO_0002444	parasite of	needs definition
http://purl.obolibrary.org/obo/RO_0002445	parasitized by	needs definition
http://purl.obolibrary.org/obo/RO_0002446	participates in a abiotic-biotic interaction with	A biotic interaction relationship in which one partner is an organism and the other partner is inorganic. For example, the relationship between a sponge and the substrate to which is it anchored.
http://purl.obolibrary.org/obo/RO_0002453	host of	needs definition
http://purl.obolibrary.org/obo/RO_0002454	has host	X 'has host' y if and only if: x is an organism, y is an organism, and x can live on the surface of or within the body of y
http://purl.obolibrary.org/obo/RO_0002455	pollinates	needs definition
http://purl.obolibrary.org/obo/RO_0002456	pollinated by	needs definition
http://purl.obolibrary.org/obo/RO_0002457	acquires nutrients from	needs definition
http://purl.obolibrary.org/obo/RO_0002458	preyed upon by	inverse of preys on
http://purl.obolibrary.org/obo/RO_0002459	is vector for	needs definition
http://purl.obolibrary.org/obo/RO_0002460	has vector	needs definition
http://purl.obolibrary.org/obo/RO_0002469	provides nutrients for	needs definition
http://purl.obolibrary.org/obo/RO_0002470	eats	needs definition
http://purl.obolibrary.org/obo/RO_0002471	is eaten by	needs definition
http://purl.obolibrary.org/obo/RO_0002553	hyperparasite of	x is a hyperparasite of y iff x is a parasite of a parasite of the target organism y
http://purl.obolibrary.org/obo/RO_0002554	hyperparasitized by	inverse of hyperparasite of
http://purl.obolibrary.org/obo/RO_0002555	allelopath of	needs definition
http://purl.obolibrary.org/obo/RO_0002556	pathogen of	needs definition
http://purl.obolibrary.org/obo/RO_0002557	has pathogen	needs definition
http://purl.obolibrary.org/obo/RO_0002574	participates in a biotic-biotic interaction with	needs definition
http://purl.obolibrary.org/obo/RO_0002618	visits	needs definition
http://purl.obolibrary.org/obo/RO_0002619	visited by	needs definition
http://purl.obolibrary.org/obo/RO_0002622	visits flowers of	needs definition
http://purl.obolibrary.org/obo/RO_0002623	has flowers visited by	needs definition
http://purl.obolibrary.org/obo/RO_0002624	lays eggs in	needs definition
http://purl.obolibrary.org/obo/RO_0002625	has eggs laid in by	needs definition
http://purl.obolibrary.org/obo/RO_0002626	kills	needs definition
http://purl.obolibrary.org/obo/RO_0002627	is killed by	needs definition
http://purl.obolibrary.org/obo/RO_0002632	ectoparasite of	A sub-relation of parasite-of in which the parasite lives on or in the integumental system of the host
http://purl.obolibrary.org/obo/RO_0002633	has ectoparasite	inverse of ectoparasite of
http://purl.obolibrary.org/obo/RO_0002634	endoparasite of	needs definition
http://purl.obolibrary.org/obo/RO_0002635	has endoparasite	needs definition
http://purl.obolibrary.org/obo/RO_0002636	mesoparasite of	A sub-relation of parasite-of in which the parasite is partially an endoparasite and partially an ectoparasite
http://purl.obolibrary.org/obo/RO_0002637	has mesoparasite	inverse of mesoparasite of
http://purl.obolibrary.org/obo/RO_0002638	intercellular endoparasite of	A sub-relation of endoparasite-of in which the parasite inhabits the spaces between host cells.
http://purl.obolibrary.org/obo/RO_0002639	has intercellular endoparasite	inverse of intercellular endoparasite of
http://purl.obolibrary.org/obo/RO_0002640	intracellular endoparasite of	A sub-relation of endoparasite-of in which the parasite inhabits host cells.
http://purl.obolibrary.org/obo/RO_0002641	has intracellular endoparasite	inverse of intracellular endoparasite of
http://purl.obolibrary.org/obo/RO_0002802	reservoir host of	A relation between a host organism and a hosted organism in which the hosted organism naturally occurs in an indefinitely maintained reservoir provided by the host.
http://purl.obolibrary.org/obo/RO_0002803	has reservoir host	inverse of reservoir host of
http://purl.obolibrary.org/obo/RO_0008501	epiphyte of	An interaction relationship wherein a plant or algae is living on the outside surface of another plant.
http://purl.obolibrary.org/obo/RO_0008502	has epiphyte	inverse of epiphyte of
http://purl.obolibrary.org/obo/RO_0008503	kleptoparasite of	A sub-relation of parasite of in which a parasite steals resources from another organism, usually food or nest material
http://purl.obolibrary.org/obo/RO_0008504	kleptoparasitized by	inverse of kleptoparasite of
http://purl.obolibrary.org/obo/RO_0008507	lays eggs on	An interaction relationship in which organism a lays eggs on the outside surface of organism b. Organism b is neither helped nor harmed in the process of egg laying or incubation.
http://purl.obolibrary.org/obo/RO_0008508	has eggs laid on by	inverse of lays eggs on