: 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
International research led by Flinders University in Australia and South China University of Technology revealed that two enzymes called PDIA1 and PDIA5 play a crucial role in helping prostate cancer cells grow, survive and resist treatment.
—
Hannah Millington, MSNBC Newsweek, 13 Oct. 2025
Using comparative molecular biology with human cGAS – which actually inhibits DNA repair – the scientists found that the naked mole-rat's enzyme has four key changes that facilitate the important work that extends their lifespan and keeps them healthy and disease-free for a remarkably long time.
—New Atlas, 12 Oct. 2025
The hope is that understanding these traffic-control enzymes could eventually lead to safe, reversible birth control options for both men and women.
—Aamir Khollam, Interesting Engineering, 10 Oct. 2025
For breakout-prone skin types, exfoliating pads combine any number of actives like AHAs, BHAs, and even fruit enzymes to clear pores and calm irritation.
—Conçetta Ciarlo, Vogue, 8 Oct. 2025
See All Example Sentences for enzyme
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Hannah Millington, MSNBC Newsweek, 13 Oct. 2025
Using comparative molecular biology with human cGAS – which actually inhibits DNA repair – the scientists found that the naked mole-rat's enzyme has four key changes that facilitate the important work that extends their lifespan and keeps them healthy and disease-free for a remarkably long time.
—New Atlas, 12 Oct. 2025
The hope is that understanding these traffic-control enzymes could eventually lead to safe, reversible birth control options for both men and women.
—Aamir Khollam, Interesting Engineering, 10 Oct. 2025
For breakout-prone skin types, exfoliating pads combine any number of actives like AHAs, BHAs, and even fruit enzymes to clear pores and calm irritation.
—Conçetta Ciarlo, Vogue, 8 Oct. 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 20 Oct. 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
Love words? Need even more definitions?
Merriam-Webster unabridged
Share