alphabet

yeast

Definition of yeast:

part of speech: noun

The froth in the working of new beer; the matter that separates from liquids during the vinous fermentation, the froth being called top- yeast, and the deposit bottom- yeast; the preparation used for raising dough for bread; barm.

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phlogiston

According to the theory of Stahl, a supposed principle or pure fire fixed in inflammable bodies, as distinguished from fire of combustion. ...

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