- a yeast, as of the genus Saccharomyces, suitable for use as a ferment in the manufacture of wine and beer.
Origin of brewer's yeast
First recorded in 1915–20
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- a yeast, Saccharomyces cerevisiae, used in brewingSee yeast (def. 3)
- yeast obtained as a by-product of brewing
- A yeast (genus Saccharomyces) used as a source of B-complex vitamins.