English

fermentative

From ferment + -ative.

A compound of ferment + -ative

Latin fermentum ‘substance causing fermentation’

Latin fermentāre ‘to leaven, ferment’

Middle French ferment

Middle English ferment

Today it means

adj Of, pertaining to, causing or undergoing fermentation.

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

Etymograph / fermentative