yeast: Meaning and Definition of
Pronunciation: (yēst), [key]
- any of various small, single-celled fungi of the phylum Ascomycota that reproduce by fission or budding, the daughter cells often remaining attached, and that are capable of fermenting carbohydrates into alcohol and carbon dioxide.
- any of several yeasts of the genus Saccharomyces, used in brewing alcoholic beverages, as a leaven in baking breads, and in pharmacology as a source of vitamins and proteins. Cf.
- spume; foam.
- ferment; agitation.
- something that causes ferment or agitation.
- to ferment.
- to be covered with froth.
- yeast (Thesaurus)