Definition of pinocytosis in English:



mass nounBiology
  • The ingestion of liquid into a cell by the budding of small vesicles from the cell membrane.

    • ‘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.’
    • ‘An extensive literature search failed to uncover specific documentation of PI uptake by pinocytosis.’
    • ‘Fluid phase pinocytosis may be the main mechanism of uptake of hydrophilic TP.’


Late 19th century from Greek pino ‘drink’ + -cytosis on the pattern of phagocytosis.



/ˌpiːnəʊsʌɪˈtəʊsɪs/ /ˌpɪnəʊsʌɪˈtəʊsɪs/ /ˌpʌɪnəʊsʌɪˈtəʊsɪs/