leaven

名词 leaven:

1. a substance used to produce fermentation in dough or a liquid
   同义词：leavening
2. an influence that works subtly to lighten or modify something
   同义词：leavening

动词 leaven:

1. cause to puff up with a leaven
   同义词：raise, prove

1. "Know ye that a little leaven leaven the whole lump?"
   岂不知小小的一点酵，足以使整团面粉发起来吗？
2. Made light and high by yeast or other leaven.
   发酵的用酵母或其它发酵剂使 ... 轻而高
3. We often use leaven when baking breads.
   烤面包时，我们经常使用发酵剂。
4. I like his serious style leavened with wit.
   我喜欢他的带点诙谐的严肃文体。

leav.en

n.（名词）
An agent, such as yeast, that causes batter or dough to rise, especially by fermentation.
酵素：一种可使面粉糊或面团发大的制剂，尤指通过发酵，如酵母菌
An element, influence, or agent that works subtly to lighten, enliven, or modify a whole.See Synonyms at catalyst
要素：可微妙地使整体变轻、变活泼或改变的因素、影响力或制剂参见 catalyst
v.tr.（及物动词）
leav.ened,leav.en.ing,leav.ens
To add a rising agent to.
向…中加发酵剂
To cause to rise, especially by fermentation.
使膨胀，尤指通过发酵
To pervade with a lightening, enlivening, or modifying influence.
充斥影响力：用轻松、活泼或变更的影响力来充斥

来源：
Middle English
中古英语
from Old French levain
源自 古法语 levain
from Vulgar Latin *lev3men
源自 俗拉丁语 *lev3men
from Latin lev3re [to raise] * see leg wh-
源自 拉丁语 lev3re [升起] *参见 leg wh-