<cell biology> A pinocytotic vesicle. ... Origin: Gr. Soma = body ... (18 Nov 1997) ... 
(pin´o-) (pi´no-sōm) the intracellular vacuole formed by pinocytosis.
A pinocytotic vesicle.
Type: Term Pronunciation: pin′ō-sōm, pī′nō- Definitions: 1. A fluid-filled vacuole formed by pinocytosis.
Pinosome: A tiny fluid-filled vesicle (bubble) within a cell. Pinosomes are created in the process of pinocytosis in which tiny incuppings called caveolae (little caves) in the surface of the cell close and then pinch off to form pinosomes within the cytoplasm of the cell. Pinocytosis permits the active transport of fluid through the membrane surro...
pinosome Any of the small fluid-filled vesicles [a small bladder or sac containing liquid] found in the cytoplasm during pinocytosis.