en·do·cy·to·sis 
(ĕn′dō-sī-tōsĭs)
(ĕn′dō-sī-tōsĭs)n.
A process of cellular ingestion by which the plasma membrane folds inward to bring substances into the cell.
en′do·cytic (-sĭtĭk), en′do·cy·totic (-sī-tŏtĭk) adj.
en′do·cy·tose (-tōs) v.