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Definition of yeast

yeast

/jiːst/
yeast

Plural:yeasts
•
Adjective:yeasty
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yeast Lexical Profile

yeast Game Scores & Validity

• noun

1

A commercial or natural preparation containing active yeast cells, widely used as a leavening agent in baking to cause dough to rise, and in brewing to ferment beverages.

Example

"Dissolve the active dry yeast in warm water before mixing it into the flour to ensure the bread rises properly."


2

A microscopic, single-celled fungus that reproduces by budding and is capable of converting sugar into alcohol and carbon dioxide.


3

An animating, restless, or stirring influence that brings about change, development, or transformation.

Example

"The new philosophical movement acted as a yeast in the stagnant cultural landscape of the era."

Synonyms
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Antonyms
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• Rhymes for yeast

Word Origin & Etymology

From Old English 'gist', of Germanic origin; related to Dutch 'gest' and German 'Gischt' (froth, foam), deriving from an Indo-European root meaning 'to boil, froth, or bubble'.

Usage Trend

Historical frequency of usage in published text.

180019102020

Cite this Entry


Wordmom. (2026). Definition of Yeast. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/yeast
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