"Leaven" is a word in ENGLISH
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.
To imbue; to infect; to vitiate.
To make light by the action of leaven; to cause to
ferment.
Anything which makes a general assimilating (especially a
corrupting) change in the mass.
How can a man’s candour be seen in all its lustre unless he has a few failings to talk of? But he had an agreeable confidence that his faults were all of a generous kind—impetuous, arm-blooded, leonine; never crawling, crafty, reptilian.
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The foam, or troth (top yeast), or the sediment (bottom yeast), of beer or other in fermentation, which contains the …
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