the transport of fluid into a cell by means of local infoldings by the cell membrane so that a tiny vesicle or sac forms around each droplet, which is then taken into the interior of the cytoplasm.
pinocytosis pin·o·cy·to·sis (pĭn'ə-sĭ-tō'sĭs, -sī-, pī'nə-) n. Introduction of fluids into a cell by invagination of the cell membrane, followed by formation of vesicles within the cells.
