English

enantiocontrol

From enantio- + control.

Ancient Greek ᾰ̓ντῐ́ος ‘opposite, against’

Ancient Greek ἐναντίος ‘opposite’

Medieval Latin contrarotulare

Middle French contreroller ‘check against a duplicate account’

Middle English controllen ‘to restrain or keep in check’

Today it means

noun control (normally partial) over the enantiomeric composition of a reaction product

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

Etymograph / enantiocontrol