Standard Lemma guide

ectodomain

noun · 1 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • General-American: /ˈɛktoʊdoʊˌmeɪn/

1

noun

Meaning 1

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

Definition source: English Wiktionary via Wiktextract

Topics: biochemistry, biology, chemistry, microbiology, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

Etymology tree Ancient Greek ἐκ (ek) Ancient Greek ἐντός (entós) Ancient Greek ἐκτός (ektós)der. English ecto- English domain English ectodomain From ecto- + domain.