English dictionary
yeast
/j//i/st/
Definitions, examples, synonyms and antonyms from WordNet 3.0.
noun
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a commercial leavening agent containing yeast cells; used to raise the dough in making bread and for fermenting beer or whiskey
Synonyms barmSource: WordNet 3.0
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any of various single-celled fungi that reproduce asexually by budding or division
Source: WordNet 3.0
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The foam, or troth (<i>top yeast</i>), or the sediment (<i>bottom yeast</i>), of beer or other in fermentation, which contains the yeast plant or its spores, and under certain conditions produces fermentation in saccharine or farinaceous substances; a preparation used for raising dough for bread or cakes, and making it light and puffy; barm; ferment.
Source: webster1913