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Definition of Leaven


  1. 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.
  2. Anything which makes a general assimilating (especially a corrupting) change in the mass.
  3. To make light by the action of leaven; to cause to ferment.
  4. To imbue; to infect; to vitiate.

Leaven Translations

leaven in Dutch is gist
leaven in Norwegian is surdeig
leaven in Spanish is levadura
leaven in Swedish is surdeg