: 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
An enzyme detergent should be effective enough to tackle tough stains and odors.
—
Katie Cloyd, Martha Stewart, 15 May 2026
In people with lactose intolerance, the body doesn’t produce enough of an enzyme called lactase, which is needed to break down lactose so it can be absorbed.
—Jillian Kubala, Health, 14 May 2026
In the teeth Without access to all the repair enzymes made by living cells, DNA rapidly degrades.
—ArsTechnica, 13 May 2026
Per the Cleveland Clinic, the genetic condition is caused by a missing enzyme that makes people unable to digest fructose, a natural sugar found in foods like fruit.
—Adam England, PEOPLE, 13 May 2026
See All Example Sentences for enzyme
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Katie Cloyd, Martha Stewart, 15 May 2026
In people with lactose intolerance, the body doesn’t produce enough of an enzyme called lactase, which is needed to break down lactose so it can be absorbed.
—Jillian Kubala, Health, 14 May 2026
In the teeth Without access to all the repair enzymes made by living cells, DNA rapidly degrades.
—ArsTechnica, 13 May 2026
Per the Cleveland Clinic, the genetic condition is caused by a missing enzyme that makes people unable to digest fructose, a natural sugar found in foods like fruit.
—Adam England, PEOPLE, 13 May 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 19 May. 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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