Definition of zymase in English:


Syllabification: zy·mase
Pronunciation: /ˈzīˌmās, -ˌmāz


  • A mixture of enzymes obtained from yeast that catalyze the breakdown of sugars in alcoholic fermentation.
    More example sentences
    • When alcohol is produced for human consumption, zymase - provided by yeast - is used as the catalyst.
    • Even now the question remains open whether zymase can be added directly to the established list of enzymes.
    • The reaction is then carried out in presence of yeast, which contain two enzymes maltose and zymase.


late 19th century: from French, from Greek zumē 'leaven'.

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a small amount; a little