: any of numerous complex proteins that are produced by living cells and catalyze specific biochemical reactions at body temperatures
Examples of enzyme in a Sentence
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Zoryve has a unique active ingredient—roflumilast, an enzyme inhibitor that’s being used for the first time in a topical medication.
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Megan McIntyre, Allure, 16 Sep. 2025
The Harvest Facial showcases Napa’s LIV + GRACE SKINCARE, using a soothing pumpkin enzyme mask to bring out autumn radiance.
—Michael Goldstein, Forbes.com, 16 Sep. 2025
To do this, methanotrophs have evolved enzymes that can grapple with the extremely strong and stable bonds between methane’s atoms.
—Katherine Bourzac, Quanta Magazine, 15 Sep. 2025
The design uses eight reactions, all driven by enzymes that exist in nature, though not together in the same species.
—Aamir Khollam, Interesting Engineering, 13 Sep. 2025
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Megan McIntyre, Allure, 16 Sep. 2025
The Harvest Facial showcases Napa’s LIV + GRACE SKINCARE, using a soothing pumpkin enzyme mask to bring out autumn radiance.
—Michael Goldstein, Forbes.com, 16 Sep. 2025
To do this, methanotrophs have evolved enzymes that can grapple with the extremely strong and stable bonds between methane’s atoms.
—Katherine Bourzac, Quanta Magazine, 15 Sep. 2025
The design uses eight reactions, all driven by enzymes that exist in nature, though not together in the same species.
—Aamir Khollam, Interesting Engineering, 13 Sep. 2025
See All Example Sentences for enzyme
Cite this Entry
“Enzyme.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/enzyme. Accessed 17 Sep. 2025.
Copy CitationKids Definition
enzyme
noun
en·zyme
ˈen-ˌzīm 
: any of various complex proteins produced by living cells that bring about or speed up reactions (as in the digestion of food) without being permanently altered
enzymatic
adjective
ˌen-zə-ˈmat-ik
enzymatically
adverb
-ˈmat-i-k(ə-)lē
Medical Definition
enzyme
noun
en·zyme
ˈen-ˌzīm
: any of numerous complex proteins that are produced by living cells and catalyze specific biochemical reactions at body temperatures
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