—n.
1 agitation, excitement, tumult.
2 a fermenting, fermentation. b a fermenting-agent or leaven.
—v.
1 intr. & tr. undergo or subject to fermentation.
2 intr. & tr. effervesce or cause to effervesce.
3 tr. excite; stir up; foment.
Derivatives:
fermentable adj. fermenter n.
Etymology: ME f. OF ferment or L fermentum f. L fervere boil
Useful english dictionary. 2012.