ex·o·cy·to·sis 
(ĕk′sō-sī-tōsĭs)
(ĕk′sō-sī-tōsĭs)n. pl. ex·o·cy·to·ses (-sēz′)
A process of cellular secretion or excretion in which substances contained in vesicles are discharged from the cell by fusion of the vesicular membrane with the outer cell membrane.
ex′o·cy·tose (-tōs) v.
ex′o·cy·totic (-tŏtĭk) adj.