An entity that exists in full at any time in which it exists at all, persists through time while maintaining its identity and has no temporal parts. continuant An entity that has temporal parts and that happens, unfolds or develops through time. occurrent p is a process = Def. p is an occurrent that has temporal proper parts and for some time t, p s-depends_on some material entity at t. (axiom label in BFO2 Reference: [083-003]) process A process during which an organism comes into contact with another entity. exposure of organism