FER'MENT, n. [L. fermentum, from fervo, to boil. See Fervent.] 1. A gentle boiling; or the internal motion of the constituent parts of a fluid.[In this sense it is rarely used. See Fermentation.]2. Intestine motion; heat; tumult; agitation; as, to put the passions in a ferment; the state of people are in a ferment.Subdue and cool the ferment of desire.3. That which causes fermentation, as yeast, barm, or fermenting beer.
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