Ferment

That which causes fermentation, as yeast, barm, or fermenting beer.

Intestine motion; heat; tumult; agitation.

A gentle internal motion of the constituent parts of a fluid; fermentation.

To cause ferment of fermentation in; to set in motion; to excite internal emotion in; to heat.

To undergo fermentation; to be in motion, or to be excited into sensible internal motion, as the constituent oarticles of an animal or vegetable fluid; to work; to effervesce.

To be agitated or excited by violent emotions.

a process in which an agent causes an organic substance to break down into simpler substances; especially, the anaerobic breakdown of sugar into alcohol