| a yeast, as of the genus Saccharomyces, suitable for use as a ferment in the manufacture of wine and beer. |
| brew·er's yeast (brōō'ərz) n. A yeast of the genus Saccharomyces, used as a ferment in brewing and also as a source of B-complex vitamins. |
brewer's yeast brew·er's yeast (br&oomacr;'ərz)
n.
A yeast (genus Saccharomyces) used as a source of B-complex vitamins.