: 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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All enzymes that help with the breakdown of vitamin D require magnesium in some way.
—
Kirstyn Hill, Health, 8 Feb. 2026
Thankfully, Sheila’s EKG and cardiac enzymes were normal and the chest pain went away.
—Literary Hub, 6 Feb. 2026
This study found these inhibitors were able to work with two enzymes that control eating behavior.
—Chris Hoffman, CBS News, 6 Feb. 2026
This is due to polyphenol oxidase, an enzyme found in potatoes (and many other vegetables).
—Kirsten Nunez, Martha Stewart, 4 Feb. 2026
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Kirstyn Hill, Health, 8 Feb. 2026
Thankfully, Sheila’s EKG and cardiac enzymes were normal and the chest pain went away.
—Literary Hub, 6 Feb. 2026
This study found these inhibitors were able to work with two enzymes that control eating behavior.
—Chris Hoffman, CBS News, 6 Feb. 2026
This is due to polyphenol oxidase, an enzyme found in potatoes (and many other vegetables).
—Kirsten Nunez, Martha Stewart, 4 Feb. 2026
See All Example Sentences for enzyme
Cite this Entry
“Enzyme.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/enzyme. Accessed 14 Feb. 2026.
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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