yeast

noun
\ ˈyēst How to pronounce yeast (audio) , especially Southern and Midland US ˈēst\

Definition of yeast

 (Entry 1 of 2)

1a : a yellowish surface froth or sediment that occurs especially in saccharine liquids (such as fruit juices) in which it promotes alcoholic fermentation, consists largely of cells of a fungus (such as the saccharomyces, Saccharomyces cerevisiae), and is used especially in the making of alcoholic liquors and as a leaven in baking
b : a commercial product containing yeast fungi in a moist or dry medium
c(1) : a unicellular fungus that is present and functionally active in yeast, usually has little or no mycelium, and reproduces by budding
(2) : any of various similar fungi
2 archaic : the foam or spume of waves
3 : something that causes ferment or activity were all seething with the yeast of revolt— J. F. Dobie

yeast

verb
yeasted; yeasting; yeasts

Definition of yeast (Entry 2 of 2)

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Other Words from yeast

Noun

yeast-like or less commonly yeastlike \ ˈyēst-​ˌlīk How to pronounce yeastlike (audio) , especially Southern and Midland US  ˈēst-​ \ adjective

Examples of yeast in a Sentence

Noun

taxation without representation proved to be the yeast of rebellion

Recent Examples on the Web: Noun

That means leaning into any trend, like rye barrel aging and wild yeast fermentation, that strikes the brewers’ fancy. James Lynch, Popular Mechanics, "New Belgium Builds a Brewery in a Denver Hotel," 12 Apr. 2019 It's spiked with 90 percent fermented yeast to help skin retain hydration. 3. Devon Abelman, Allure, "Kyla Massie of K-Pop Group Pristin Shares Her Favorite Skin-Care Products on Twitter," 8 May 2019 In a very large bowl, whisk flour and salt together to combine and then add yeast mixture and olive oil. Noor Brara, Vogue, "Samin Nosrat Wants Viewers to Cook What They See on Her New Netflix Show, Salt, Fat, Acid, Heat," 19 Oct. 2018 Add butter, oil, and yeast mixture and beat on low speed, scraping bowl occasionally, until dough becomes smooth elastic mass around hook, about 10 minutes. Cherry Point, Good Housekeeping, "How to Make Homemade Saltine Crackers," 7 Aug. 2018 In this case, the yeast in the flour works as the ripening agent. Amy Mitchell, Country Living, "How to Ripen an Avocado Fast," 3 May 2019 In Barbe-Nicole's time, the most common method for refining the vintage was simply to open it and pour the wine into a new bottle, leaving the yeast behind. Lauren Hubbard, Town & Country, "You Have the Founding Mothers of Champagne to Thank for the Bubbly You Drink Today," 8 Mar. 2019 Make a large well in the center of the flour mixture and add the yeast. Daniel Neman, sacbee, "Artistry, flavor blends are marks of Moroccan," 10 July 2018 In the days before electricity and climate control, cold winters could easily halt the progress of fermentation in unheated wine cellars by sending the yeasts into a form of hibernation until temperatures rose again in the spring. Marnie Old, Philly.com, "Great Wine Values: Relax Riesling," 7 June 2018

Recent Examples on the Web: Verb

Same for dozens of styles of fish stew, yeasted rolls, cakes, and pies found around the world. National Geographic, "The Secret History of the World's Priciest Spice," 3 May 2017

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

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First Known Use of yeast

Noun

before the 12th century, in the meaning defined at sense 1a

Verb

1819, in the meaning defined above

History and Etymology for yeast

Noun

Middle English yest, from Old English gist; akin to Old High German jesen, gesen to ferment, Greek zein to boil

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Statistics for yeast

Last Updated

14 Jun 2019

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Time Traveler for yeast

The first known use of yeast was before the 12th century

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More Definitions for yeast

yeast

noun

English Language Learners Definition of yeast

: a type of fungus that is used in making alcoholic drinks (such as beer and wine) and in baking to help make dough rise

yeast

noun
\ ˈyēst How to pronounce yeast (audio) \

Kids Definition of yeast

1 : a single-celled fungus that ferments sugar to produce alcohol and carbon dioxide
2 : a commercial product containing living yeast cells that is used in baking to make dough rise and in the making of alcoholic beverages (as wine)

yeast

noun
\ ˈyēst How to pronounce yeast (audio) \

Medical Definition of yeast

1 : a unicellular chiefly ascomycetous fungus (as of the family Saccharomycetaceae) that has usually little or no mycelium, that typically reproduces asexually by budding, and that includes forms (as Saccharomyces cerevisiae) which cause alcoholic fermentation and are used especially in the making of alcoholic beverages and leavened bread
2 : a yellowish surface froth or sediment that occurs especially in sugary fermenting liquids (as fruit juices) and consists chiefly of yeast cells and carbon dioxide
3 : a commercial product containing yeast cells in a moist or dry medium

Other Words from yeast

yeastlike \ -​ˌlīk How to pronounce yeastlike (audio) \ adjective

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More from Merriam-Webster on yeast

Rhyming Dictionary: Words that rhyme with yeast

Thesaurus: All synonyms and antonyms for yeast

Spanish Central: Translation of yeast

Nglish: Translation of yeast for Spanish Speakers

Britannica English: Translation of yeast for Arabic Speakers

Britannica.com: Encyclopedia article about yeast

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