Cell Function
endocytosis Audio
en·do·cy·to·sis [ en-doh-sahy-toh-sis ]
Subclass of:
Cell physiology
Definitions related to endocytosis:
  • A vesicle-mediated transport process in which cells take up external materials or membrane constituents by the invagination of a part of the plasma membrane to form a new membrane-bounded vesicle.
    Gene Ontology Dictionary
    Gene Ontology Consortium, 2021
  • Cellular uptake of extracellular materials within membrane-limited vacuoles or microvesicles. ENDOSOMES play a central role in endocytosis.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2025
  • The uptake by a cell of material from the environment by invagination of its plasma membrane.
    CRISP Thesaurus
    National Institutes of Health, 2006
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This content should not be used in place of medically-reviewed decision support reference material or professional medical advice. Some terms may have alternate or updated definitions not reflected in this set. The definitions on this page should not be considered complete or up to date.