The original Latin word for leaven, yeast, or any substance that causes fermentation; sometimes used in English scientific texts.
Latin fermentum, possibly from fervere (to boil, be hot, be agitated), referring to the visible bubbling and heat-generating process of fermentation.
Latin fermentum is the root of our entire fermentation vocabulary—every word beginning with 'ferment' traces back to this single Latin term that Romans used to describe the rising of bread.
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