late 14c. (intransitive), from Old French fermenter (13c.) and directly from Latin fermentare "to leaven, cause to rise or ferment," from fermentum "substance causing fermentation, leaven, drink made of fermented barley," perhaps contracted from *fervimentum, from root of fervere "to boil, seethe" (see brew (v.)). Transitive use from 1670s. Figurative use from 1650s. Related: Fermented; fermenting.
ferment (n.)
early 15c., from Middle French ferment (14c.), from Latin fermentum "leaven, yeast; drink made of fermented barley;" figuratively "anger, passion" (see ferment (v.)). Figurative sense of "anger, passion, commotion" in English is from 1670s.
例文
1. Foods that ferment quickly in the stomach are excellent natural laxatives.
胃腸で急速に発酵する食品は絶好の天然便通剤である。
2.Fruit juices ferment if they are kept for too long.
ジュースは保存しすぎると発酵します。
3.Fruit juices ferment if they are kept a long time.
ジュースは長く放置すると発酵する。
4.The sixties were a time of theological ferment .
60年代は神学的な騒動の時代だった。
5.To serve the needs of bakers，manufactures ferment the yeast to produce a more concentrated product.