: any of two or more chemically distinct but functionally similar enzymes

Word History

First Known Use

1960, in the meaning defined above

Time Traveler
The first known use of isoenzyme was in 1960

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Cite this Entry

“Isoenzyme.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/isoenzyme. Accessed 21 Mar. 2025.

Medical Definition

isoenzyme

noun
: any of two or more chemically distinct but functionally similar enzymes

called also isozyme

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