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

Flour, yeast, salt, water, and skill come together to make something truly magic and life-sustaining under Martin’s strong, watchful eye. Annemarie Conte, Woman's Day, "What We Learned After Baking Nothing But Bread for 3 Days," 9 Apr. 2019 Synthetic biologists are turning yeast into microscopic chemical factories that manufacture cannabinoids found in the marijuana plant (Cannabis sativa). Jill Kiedaisch, Popular Mechanics, "Scientists Use Yeast to Produce Cannabinoids Affordably and Efficiently," 1 Mar. 2019 Add flour, cocoa powder, salt, yeast and pâte fermentée. Amy Dewall Dadmun, Milwaukee Journal Sentinel, "'Revolving door' of summer visitors calls for special food," 19 May 2018 Meanwhile in blender, puree cashews, lemon juice, chili powder, cumin, paprika, garlic powder, sea salt, nutritional yeast, and jalapeno with 1 cup water until smooth. The Good Housekeeping Test Kitchen, Good Housekeeping, "Crispy Potatoes with Vegan Nacho Sauce," 5 Jan. 2016 After smelling the distinct nutty scent of the of the nutritional yeast, which is often used as a substitute for cheese in vegan recipes, the elder Mr. Bucci took a pass on his son’s creation. Alina Dizik, WSJ, "Sorry Grandma, Your Soup Looks Boring on Instagram. So We’re ‘Fixing’ It," 23 Oct. 2018 The cru classé gets its silky texture and savory tang from maturing on the lees, as well as aging in large-format wooden vats under fleurette, a thin veil of ambient yeast. Ellen Bhang, BostonGlobe.com, "These Provençal pours are not the rosé you expect," 28 May 2018 One option is to breed or isolate strains of yeast that leave the glucosides intact. Doug Main, Scientific American, "Smoke Taint: Wildfires Pose a Growing Threat to Winegrowers," 1 Dec. 2017 In a person’s lungs, the spores can transform into yeast and spread through the bloodstream to other body parts, according to the Centers for Disease Control and Prevention (CDC). Sarah Klein, Health.com, "The Rescued Thai Soccer Team Is Being Monitored For 'Cave Disease' and Other Health Concerns," 10 July 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

19 Apr 2019

Look-up Popularity

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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