inhibitor
noun
in·hib·i·tor
in-ˈhi-bə-tər 
: one that inhibits: such as
a
: an agent that slows or interferes with a chemical action
b
: a substance that reduces or suppresses the activity of another substance (such as an enzyme)
Examples of inhibitor in a Sentence
Recent Examples on the Web
All patients were treated with immune checkpoint inhibitors, a type of immunotherapy drugs that help the immune system recognize and attack tumor cells more effectively.
—
Melissa Rudy, FOXNews.com, 23 Oct. 2025
BioAge is likely to see upside from its novel obesity treatment, BGE-102, a highly potent small-molecule NLRP3 inhibitor, according to Citi.
—Liz Napolitano, CNBC, 22 Oct. 2025
For hormone-receptor–positive cancers—the most common type in midlife women—CDK inhibitors like palbociclib, ribociclib and abemaciclib have been game-changing.
—Lauryn Higgins, Flow Space, 21 Oct. 2025
Tyramine can suddenly raise blood pressure when combined with monoamine oxidase inhibitors (MAOIs), a type of antidepressant.
—Merve Ceylan, Health, 20 Oct. 2025
See All Example Sentences for inhibitor
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Melissa Rudy, FOXNews.com, 23 Oct. 2025
BioAge is likely to see upside from its novel obesity treatment, BGE-102, a highly potent small-molecule NLRP3 inhibitor, according to Citi.
—Liz Napolitano, CNBC, 22 Oct. 2025
For hormone-receptor–positive cancers—the most common type in midlife women—CDK inhibitors like palbociclib, ribociclib and abemaciclib have been game-changing.
—Lauryn Higgins, Flow Space, 21 Oct. 2025
Tyramine can suddenly raise blood pressure when combined with monoamine oxidase inhibitors (MAOIs), a type of antidepressant.
—Merve Ceylan, Health, 20 Oct. 2025
See All Example Sentences for inhibitor
Cite this Entry
“Inhibitor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/inhibitor. Accessed 29 Oct. 2025.
Copy CitationMedical Definition
inhibitor
noun
in·hib·i·tor
in-ˈhib-ət-ər
: one that inhibits: as
a
: an agent that slows or interferes with a chemical reaction
b
: a substance that reduces the activity of another substance (as an enzyme)
c
: a gene that checks the normal effect of another nonallelic gene when both are present
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