[fer.ment] vi (14c) 1: to undergo fermentation
2: to be in a state of agitation or intense activity ~ vt 1: to cause to undergo fermentation
2: to work up (as into a state of agitation): foment -- fer.ment.able adj
[2]fer.ment n [ME, fr. L fermentum yeast--more at barm] (15c) 1 a: a living organism (as a yeast) that causes fermentation by virtue of its enzymes b: enzyme
2. a: a state of unrest: agitation b: a process of active often disorderly development "the great period of creative ~ in literature --William Barrett"