ga·​lac·​to·​si·​dase | \ gə-ˌlak-ˈtō-sə-ˌdās How to pronounce galactosidase (audio) , -zə-ˌdāz \

Definition of galactosidase

: an enzyme (such as lactase) that hydrolyzes a galactoside

Examples of galactosidase in a Sentence

Recent Examples on the Web Or test your tolerance for small portions of less-gassy legumes like lentils and chickpeas with the aid of a bean-fiber-busting enzyme supplement called alpha galactosidase. SELF, "Why This Registered Dietitian Tells (Some of) Her Patients to Avoid Kale Salads," 30 Nov. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'galactosidase.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of galactosidase

1914, in the meaning defined above

History and Etymology for galactosidase

galactoside + -ase (perhaps after French galactosidase)

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Time Traveler for galactosidase

Time Traveler

The first known use of galactosidase was in 1914

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Cite this Entry

“Galactosidase.” Dictionary, Merriam-Webster, Accessed 10 Apr. 2021.

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More Definitions for galactosidase


ga·​lac·​to·​si·​dase | \ gə-ˌlak-ˈtō-sə-ˌdās, -zə-ˌdāz How to pronounce galactosidase (audio) \

Medical Definition of galactosidase

: an enzyme (as lactase) that hydrolyzes a galactoside

More from Merriam-Webster on galactosidase Encyclopedia article about galactosidase

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