I . n.
1.
Yeast, leaven, barm.
2.
Fermentation, fungic transformation.
3.
Agitation, commotion, tumult, heat, glow, fever, state of excitement.
II . v. a.
1.
Set in ~ation, set ~ing, produce ~ation in, transform by means of a ~.
2.
Excite, agitate, heat.
III . v. n.
1.
Work, be in a ~, undergo ~ation, be ~ed.
2.
Be excited, be agitated, be on fire.