• Yeast

    Pronunciation

    • enPR: yÄ“st, IPA: /jiːst/ (also IPA: /iːst/)
    • Rhymes: -iːst

    Origin

    From Middle English yeest, yest, gest, gist, from Old English ġist, ġyst, from Proto-Germanic *jestuz. Compare Dutch gist, German Gischt, Swedish jäst.

    Full definition of yeast

    Noun

    yeast

    (countable and uncountable; plural yeasts)
    1. An often humid, yellowish froth produced by fermenting malt worts, and used to brew beer, leaven bread, and also used in certain medicines.
    2. A single-celled fungus of a wide variety of taxonomic families.
      1. A true yeast or budding yeast in order Saccharomycetales.
        1. baker's yeast,
          1. A compressed cake or dried granules of this substance used for mixing with flour to make bread dough rise.
        2. brewer's yeast, certain species of Saccharomyces, principally and .
        3. Candida, a ubiquitous fungus that can cause various kinds of infections in humans.
          1. The resulting infection, candidiasis.
      2. (figuratively) A frothy foam.
        • 1851, Herman Melville, Moby-Dick:But what most puzzled and confounded you was a long, limber, portentous, black mass of something hovering in the centre of the picture over three blue, dim, perpendicular lines floating in a nameless yeast.

    Verb

    1. To ferment.
    2. (of something prepared with a yeasted dough) To rise.
    3. (African American Vernacular English, slang) To exaggeratehttp://www.probertencyclopaedia.com/cgi-bin/res.pl?keyword=Yeasting&offset=0
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