en·​do·​cy·​to·​sis | \ˌen-də-sī-ˈtō-səs \

Definition of endocytosis 

: incorporation of substances into a cell by phagocytosis or pinocytosis

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Other Words from endocytosis

endocytotic \ˌen-​də-​sī-​ˈtä-​tik \ adjective

Examples of endocytosis in a Sentence

Recent Examples on the Web

Once attached, the viral particle gets essentially engulfed by the cell, a process called endocytosis. Beth Mole, Ars Technica, "Looks like a rough flu season ahead. Here are answers to ALL your flu questions," 9 Dec. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'endocytosis.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of endocytosis

1963, in the meaning defined above

History and Etymology for endocytosis

New Latin, from end- + -cytosis (as in phagocytosis)

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The first known use of endocytosis was in 1963

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More Definitions for endocytosis


en·​do·​cy·​to·​sis | \-sī-ˈtō-səs \
plural endocytoses\-​ˌsēz \

Medical Definition of endocytosis 

: incorporation of substances into a cell by phagocytosis or pinocytosis

Other Words from endocytosis

endocytose \-​ˈsī-​ˌtōs, -​ˌtōz \ transitive verb endocytosed; endocytosing
endocytotic \-​sī-​ˈtät-​ik \ adjective

More from Merriam-Webster on endocytosis

Britannica.com: Encyclopedia article about endocytosis

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the figure or shape of a crescent moon

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