单词 | yeast |
释义 | yeast n.   1. a greyish-yellow fungous substance obtained esp. from fermenting malt liquors and used as a fermenting agent, to raise bread, etc.   2. any of various unicellular fungi in which vegetative reproduction takes place by budding or fission. Derivatives yeastless adj. yeastlike adj. Etymology: OE gist, giest (unrecorded): cf. MDu. ghist, MHG jist, ON j{ouml}str |
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