Share this entry
pinocytosis Line breaks: pino|cyt¦osis
Pronunciation: /ˌpiːnəʊsʌɪˈtəʊsɪs/
/ˌpɪnəʊsʌɪˈtəʊsɪs/ /ˌpʌɪnəʊsʌɪˈtəʊsɪs/

Definition of pinocytosis in English:


[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.

Definition of pinocytosis in:
Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Subscribe to remove ads and access premium resources