English
exochitinase
From exo- + chitinase.
Proto-Indo-European *h₁eǵʰs ‘out of’
Proto-Hellenic *eks
Ancient Greek ἐκ ‘Out of, from’
Ancient Greek ἔξω ‘outer’
English exo-
Today it means
noun Any chitinase that cleaves a chitin molecule at a terminal position
Language periods are conventional ranges, not dates for this word.
Etymograph / exochitinase