brewer's yeast

noun

: a yeast used or suitable for use in brewing

specifically : the dried pulverized cells of such a yeast (Saccharomyces cerevisiae) used especially as a source of B-complex vitamins

Examples of brewer's yeast in a Sentence

Recent Examples on the Web

Unlike brewer's yeast, which is activated, nutritional yeast is a deactivated or inactive strain of the fungus Saccharomyces cerevisiae. —Stephanie Brown, Verywell Health, 4 Mar. 2026

The researchers also found that the hydrophobic glass was effective in adhering to a species of yeast known as S. cerevisiae, commonly known as baker's or brewer's yeast. —Michael Franco, New Atlas, 2 Mar. 2025

Food With Brewer's Yeast Foods containing brewer's yeast, or Saccharomyces cerevisiae, can worsen HS symptoms. —Merve Ceylan, Health, 26 Dec. 2024

This supplement contains a combination of ingredients such as yucca schidigera extract and brewer's yeast, which help deter stool consumption while supporting optimal digestive health. —Amber Smith, Discover Magazine, 24 July 2023

Word History

First Known Use

1824, in the meaning defined above

Rhymes for brewer's yeast

• beast
• ceased
• creased
• east
• feast
• fleeced
• geest
• greased
• leased
• least
• pieced
• priest

Kids Definition

brewer's yeast

noun

: a yeast used or suitable for use in brewing

also : the dried ground-up cells of such a yeast used as a source of the vitamin B complex

Medical Definition

brewer's yeast

noun

brew·​er's yeast ˈbrü-ərz- 

: the dried pulverized cells of a yeast of the genus Saccharomyces (S. cerevisiae) used in brewing and especially as a source of B-complex vitamins