ectodomain

E1C3T1O1D2O1M3A1I1N1
US/ˈɛktoʊdoʊˌmeɪn/

noun

The portion of a polypeptide on a cell membrane that extends beyond the membrane into the extracellular space.

Similar
exodomain
OriginEnglish domain ← Ancient Greek ἐκτός (ektós) →
RareScrabble 15
Ask AI about this wordChatGPTClaudePerplexityGoogle AIGrok

Meanings

nounectodomain (plural ectodomains)

plural ectodomains

  1. biochemistryThe portion of a polypeptide on a cell membrane that extends beyond the membrane into the extracellular space.

    Synonyms: exodomain

Synonyms & antonyms

nounThe portion of a polypeptide on a cell membrane that extends beyond the membrane into the extracellular space.

Similar
exodomain

Origin

  1. Ancient Greekἐκ (ek)
  2. Ancient Greekἐντός (entós)
  3. Ancient Greekἐκτός (ektós)
  4. Englishecto-
  5. Englishdomain
  6. Englishectodomain

From ecto- + domain.

Full word history & related roots →

Rhymes & wordplay

Anagrams

adenotomiccodominate
Cite this entry
APA

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

MLA

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

Chicago

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

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