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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.

Other popular brands include Marmite yeast extract and Colman’s mustard.

From The Wall Street Journal • Mar. 29, 2026

For that sugar to then ferment and produce alcohol, the person giving the sample would also need to have a yeast infection, she wrote.

From Los Angeles Times • Mar. 19, 2026

We found previously unknown centromeres in related yeast species that look like halfway stages between large, repeat-rich centromeres and the tiny ones in brewer's yeast.

From Science Daily • Mar. 10, 2026

After growing its proprietary enzymes in a yeast media, Samsara Eco passes plastics over them in stainless-steel vats.

From The Wall Street Journal • Mar. 10, 2026

“Vrasayana was in charge of a brine-evaporation plant for the production of iodine, with which yeast can do without, but human beings not. His plant was forced into receivership.”

From "I, Robot" by Isaac Asimov