English

exotoxin

From exo- + toxin.

A compound of exo- + toxin

Proto-Indo-European *h₁eǵʰs ‘out of’

Proto-Hellenic *eks

Ancient Greek ἐκ ‘Out of, from’

Ancient Greek ἔξω ‘outer’

English exo-

Latin toxicum ‘a poison used on the tips of arrows’

English toxin

Today it means

noun Any toxin secreted by a microorganism into the surrounding environment.

Language periods are conventional ranges, not dates for this word.

Etymograph / exotoxin