brewer's yeast

noun

a yeast, as of the genus Saccharomyces, suitable for use as a ferment in the manufacture of wine and beer.

Origin

1915-20

Examples from the web for brewer's yeast

Traditional ethanol is made when brewer's yeast feeds on glucose, the sugar found in corn starch and cellulose.

British Dictionary definitions for brewer's yeast

noun

a yeast, Saccharomyces cerevisiae, used in brewing See yeast (sense 3)

yeast obtained as a by-product of brewing

brewer's yeast in Medicine

brewer's yeast brew·er's yeast (brōō'ərz)
n.
A yeast (genus Saccharomyces) used as a source of B-complex vitamins.