: 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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Laboratory tests showed that human enzymes with this Neanderthal variant had 25 percent less AMPD1 activity.
—
Jenny Lehmann, Discover Magazine, 18 July 2025
These include microscopic solids, free fatty acids, enzymes, and other organic matter.
—Katie Rosenhouse, Southern Living, 18 July 2025
Glass bottle is a little clunky Stubborn dark spots and uneven skin patches have nothing on this energizing cleanser that has AHA, BHA, papaya enzymes, and ginger root to help even tone and minimize large pores.
—Alanna Martine Kilkeary, Glamour, 17 July 2025
Ovarian cancer Pancreatic insufficiency (when the pancreas does not produce enough digestive enzymes)
Abdominal fat builds up in your midsection.
—Lindsey Desoto, Health, 16 July 2025
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Jenny Lehmann, Discover Magazine, 18 July 2025
These include microscopic solids, free fatty acids, enzymes, and other organic matter.
—Katie Rosenhouse, Southern Living, 18 July 2025
Glass bottle is a little clunky Stubborn dark spots and uneven skin patches have nothing on this energizing cleanser that has AHA, BHA, papaya enzymes, and ginger root to help even tone and minimize large pores.
—Alanna Martine Kilkeary, Glamour, 17 July 2025
Ovarian cancer Pancreatic insufficiency (when the pancreas does not produce enough digestive enzymes)
Abdominal fat builds up in your midsection.
—Lindsey Desoto, Health, 16 July 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 30 Jul. 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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