The meaning of FERMENT is to undergo fermentation. How to use ferment in a sentence.

FERMENT definition: any of a group of living organisms, as yeasts, molds, and certain bacteria, that cause fermentation. See examples of ferment used in a sentence.

If food or drink ferments or if you ferment it, it goes through a chemical change because of the action of yeast or bacteria, which may cause it to produce bubbles or heat, or turn sugars in it …

Success came in 1897 when the German chemist Eduard Buechner ground up yeast, extracted a juice from them, then found to his amazement this "dead" liquid would ferment a sugar …

Jan 5, 2026 · More broadly, fermentation is the foaming that occurs during the manufacture of wine and beer, a process at least 10,000 years old. The frothing results from the evolution of …

1. To cause to undergo fermentation: Yeasts ferment sugars. 2. To produce by or as if by fermentation: ferment the wine in oak barrels; hostility that was fermented by envy. 3. To make …

Definition of ferment verb in Oxford Advanced American Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Ferment is excitement and trouble caused by change or uncertainty. The whole country has been in a state of political ferment for some months.

While you might be more familiar with the verb ferment, referring to the natural process that produces alcohol, the word is also used as a noun, giving the same type of boiling emotion to …

: chemical breaking down of a substance (as in the souring of milk or the formation of alcohol from sugar) produced by an enzyme and often accompanied by the formation of a gas. Pasteur …