: 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
Recent Examples on the Web
During this process, enzymes begin to break down proteins, such as those found in hot dogs, while carbohydrates from the buns are converted into sugars.
—
Jennifer Borresen,
USA Today,
3 July 2026
The hobbits wouldn’t have been at risk of venom poisoning while scavenging because Komodo dragon venom contains proteins that stomach enzymes would break down, according to the study.
—
Ashley Strickland,
CNN Money,
3 July 2026
Pineapple contains bromelain, a group of protein-digesting enzymes, which help your body better digest and absorb protein foods and their associated nutrients.
—
Amy Brownstein,
Verywell Health,
3 July 2026
Octapharma and plasma Plasma — the liquid portion of blood, containing water, enzymes, proteins, electrolytes and antibodies — cannot be manufactured.
—
John Marks,
Charlotte Observer,
2 July 2026
See All Example Sentences for enzyme
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Jennifer Borresen,
USA Today,
3 July 2026
The hobbits wouldn’t have been at risk of venom poisoning while scavenging because Komodo dragon venom contains proteins that stomach enzymes would break down, according to the study.
—
Ashley Strickland,
CNN Money,
3 July 2026
Pineapple contains bromelain, a group of protein-digesting enzymes, which help your body better digest and absorb protein foods and their associated nutrients.
—
Amy Brownstein,
Verywell Health,
3 July 2026
Octapharma and plasma Plasma — the liquid portion of blood, containing water, enzymes, proteins, electrolytes and antibodies — cannot be manufactured.
—
John Marks,
Charlotte Observer,
2 July 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 5 Jul. 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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