: an enzyme or enzyme complex of yeast that promotes fermentation of sugar

Word History

Etymology

International Scientific Vocabulary

First Known Use

circa 1875, in the meaning defined above

Time Traveler
The first known use of zymase was circa 1875

Browse Nearby Words

Cite this Entry

“Zymase.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/zymase. Accessed 7 Jul. 2026.

Medical Definition

: an enzyme or enzyme complex that promotes glycolysis
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!