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Definitions

yeast

[yeest] / yist /
NOUN
leaven
Synonyms


NOUN
foam
Synonyms
NOUN
rising agent
Synonyms


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Perhaps the best-known examples of fermentation are in baking and brewing, where yeast breaks down sugar into ethanol and carbon dioxide.

From BBC • Jun. 4, 2026

It is too early to say whether the yeast is harming the mummy, Sarhan said, calling for more research.

From Barron's • Jun. 3, 2026

"What we didn't expect to find was yeast," lead study author Mohamed Sarhan of the Eurac Research institute in the Italian city of Bolzano told AFP.

From Barron's • Jun. 3, 2026

Using large deep mutational scanning datasets from their own lab and others, the team looked at the effects of many mutations in model organisms such as yeast and E. coli.

From Science Daily • May 29, 2026

A new species of yeast, apparently unique to Antarctica, was discovered in his samples by his widow, Helen Simpson Vishniac.

From "Cosmos" by Carl Sagan




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