English

heteroaddition

From hetero- + addition.

Proto-Indo-European *sem- ‘one, whole’

Proto-Indo-European *sḿ̥teros

Proto-Hellenic *hə́teros

Ancient Greek ἕτερος ‘other, another, different’

Proto-Indo-European *deh₃- ‘to give’

Latin addō ‘add’

Latin additiō

Old French adition

Middle English addicioun

Today it means

noun Any addition reaction that introduces a heteroatom

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

Etymograph / heteroaddition