Definition of pinocytosis in English:


Syllabification: pin·o·cy·to·sis
Pronunciation: /ˌpinəsīˈtōsis, pīnə-


The ingestion of liquid into a cell by the budding of small vesicles from the cell membrane.
More example sentences
  • Cells use pinocytosis to take up TCII hydroxocobalamin.
  • However, small areas of low emission could be found in the cytoplasm, showing that the compound was taken up by the cells, probably by pinocytosis.
  • It is possible that the chemical can gain entry into cells as small, colloidal particles via phagocytosis or pinocytosis and may also enter dead, dying or damaged cells.


late 19th century: from Greek pino 'drink' + -cytosis on the pattern of phagocytosis.



More example sentences
  • Abundant basal lamina, interdigitating cell membrane, rough endoplasmic reticulum, and pinocytotic vesicles were seen in all 3 cases.
  • The cells had dense basal lamina with pinocytotic vesicles along their surface and numerous cytoplasmic thin microfilaments with dense bodies.
  • Electron microscopic examination showed spindle cells containing fine filaments associated with focal densities and pinocytotic vesicles, indicating rudimentary smooth muscle cell differentiation.

Definition of pinocytosis in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day rebuff
Pronunciation: rɪˈbʌf
reject (someone or something) in an abrupt manner…