| | Leaven: English to Bangla |  |  | 
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				| Leaven: English to English |  | Leaven (n.) Any substance that produces, or is designed to produce, fermentation, as in dough or liquids; esp., a portion of fermenting dough, which, mixed with a larger quantity of dough, produces a general change in the mass, and renders it light; yeast; barm. |  | Leaven (n.) Anything which makes a general assimilating (especially a corrupting) change in the mass. |  | Leaven (v. t.) To imbue; to infect; to vitiate. |  | Leaven (v. t.) To make light by the action of leaven; to cause to ferment. |  |