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 into alcohol.

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 turbulent; excite or …

Ferment is a biochemical process in which an organic substance, like sugar or starch, is broken down into simpler substances by the action of enzymes, bacteria, yeasts, or mold. The process often …

4 days ago · Fermentation does more than preserve food — it changes nutrients, flavor, and the bacteria living in your gut. Here’s what the science says.

Jan 20, 2026 · ferment (third-person singular simple present ferments, present participle fermenting, simple past and past participle fermented) To react, using fermentation; especially to produce alcohol …

ferment - WordReference English dictionary, questions, discussion and forums. All Free.

Ferment definition: Something, such as a yeast, bacterium, mold, or enzyme, that causes fermentation.

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