Definition of pinocytosis in English:

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Pronunciation: /ˌpiːnəʊsʌɪˈtəʊsɪs/
/ˌpɪnəʊsʌɪˈtəʊsɪs/ /ˌpʌɪnəʊsʌɪˈtəʊsɪs/


[mass noun] Biology
The ingestion of liquid into a cell by the budding of small vesicles from the cell membrane.
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.

For editors and proofreaders

Line breaks: pino|cyt¦osis

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