| 单词 | leaven |
| 释义 | Word Frequency leaven(ˈlɛvən) noun also: leavening 1. any substance that produces fermentation in dough or batter, such as yeast, and causes it to rise 2. a piece of such a substance kept to ferment a new batch of dough 3. an agency or influence that produces a gradual change verb (transitive) 4. to cause fermentation in (dough or batter) 5. to pervade, causing a gradual change, esp with some moderating or enlivening influence Derived forms leavener (ˈleavener) noun Word origin C14: via Old French ultimately from Latin levāmen relief, (hence, raising agent, leaven), from levāre to raise |
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