brewer's yeast

noun

Definition of brewer's yeast

: a yeast used or suitable for use in brewing specifically : the dried pulverized cells of such a yeast (Saccharomyces cerevisiae) used especially as a source of B-complex vitamins

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Suddenly, the patron saint of beer-lovers—the brewer's yeast St. Saccharomyces cerevisiae—reaches out and momentarily squashes the hill nearly flat. — Chris Lee, Ars Technica, "Lumber’s lure: Thanks to physics, viable biofuel may grow in the woods," 5 Apr. 2018 Who's next: Thompson has challenged Brent Balika of Margeaux Brasserie in the Waldorf Astoria to create a dish with Vegemite, the Australian spread made from brewer's yeast extract. — Julia Thiel, Chicago Reader, "Food & Drink / Key Ingredient Watch chef Christopher Thompson create the most expensive pizza ever made with Chef Boyardee ravioli," 20 Feb. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'brewer's yeast.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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The first known use of brewer's yeast was in 1824

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brewer's yeast

noun

brew·er's yeast | \ˈbrü-ərz-

Medical Definition of brewer's yeast

: the dried pulverized cells of a yeast of the genus Saccharomyces (S. cerevisiae) used in brewing and especially as a source of B-complex vitamins