IPA: /fərˈmɛntətɪv/
KK: /fərˈmɛntətɪv/
Relating to a process that causes substances to change chemically, often producing gas or alcohol.
The fermentative process is essential in making bread rise and in brewing beer.
Fermentative → It is formed from "ferment" (from Latin "fermentare", meaning to leaven or cause to rise) and the suffix "-ative" (meaning having the nature of). The word "fermentative" describes something that has the nature of causing fermentation or leavening.
Think of the word 'ferment' which means to cause something to rise or change, and remember that 'fermentative' refers to something that has the nature of causing that change.