exosome

ex·o·some
E1X8O1S1O1M3E1
/ˈɛks.oʊˌsoʊm/

noun

An intracellular macromolecular protein complex involved in RNA degradation.

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Meanings

nounexosome (plural exosomes)

plural exosomes

  1. biologyAn intracellular macromolecular protein complex involved in RNA degradation.
  2. biologyAn extracellular vesicle released from the endosomal compartment of eukaryotic cells, responsible for the selective removal of plasma membrane protein.

Origin

From exo- + -some.

Full word history & related roots →

Translations

Chinese Mandarin 外泌體 /外泌体
  • 外泌體 /外泌体protein complex
Czech exozom
  • exozomprotein complex
Finnish eksosomi, solunulkoinen vesikkeli
  • eksosomiprotein complex
  • solunulkoinen vesikkelivesicle
  • eksosomivesicle
French exosome
  • exosomevesicle
Polish egzosom
  • egzosomprotein complex
Russian зкзосо́ма, зкзосо́ма
  • зкзосо́ма (zkzosóma)protein complex
  • зкзосо́ма (zkzosóma)vesicle
Cite this entry
APA

exosome. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/exosome

MLA

“exosome.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/exosome. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “exosome,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/exosome.

Source: exosome on Wiktionary, CC BY-SA 4.0.