Standard Lemma guide

exotoxin

noun · 2 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

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1

noun

Meaning 1

Any toxin secreted by a microorganism into the surrounding environment.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

a toxin that is secreted by microorganisms into the surrounding medium

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: endotoxin

Broader terms: toxin

History

Etymology

Etymology tree Proto-Indo-European *h1éǵh Proto-Indo-European *-s Proto-Indo-European *h1eǵhs Proto-Hellenic *eks Ancient Greek ἐκ (ek) Ancient Greek ἔξω (éxō)der. English exo- Ancient Greek τόξον (tóxon) Proto-Indo-European *-kos Proto-Hellenic *-kos Ancient Greek -κός (-kós) Ancient Greek -ῐκός (-ĭkós) Ancient Greek τοξῐκός (toxĭkós) Ancient Greek τοξικόν (toxikón)der. Latin toxicum Proto-Indo-European *-nós Proto-Indo-European *-iHnos Proto-Italic *-īnos Latin -īnusder. Old French -inbor. Middle English -in English -ineclip. English -in English toxin English exotoxin From exo- + toxin.

Across languages

Translations

8 source translations are retained for this English entry.

  • Catalan: exotoxina — any toxin secreted by a microorganism into surrounding environment
  • Finnish: eksotoksiini — any toxin secreted by a microorganism into surrounding environment
  • French: exotoxine — any toxin secreted by a microorganism into surrounding environment
  • Italian: esotossina — any toxin secreted by a microorganism into surrounding environment
  • Polish: egzotoksyna — any toxin secreted by a microorganism into surrounding environment
  • Romanian: exotoxină — any toxin secreted by a microorganism into surrounding environment
  • Russian: э̀кзотокси́н (èkzotoksín) — any toxin secreted by a microorganism into surrounding environment
  • Spanish: exotoxina — any toxin secreted by a microorganism into surrounding environment