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
Examples of calcineurin inhibitors include cyclosporine and Prograf (tacrolimus).
—
Karen Berger, Pharmd, Verywell Health, 27 Mar. 2025
Options include immune checkpoint inhibitors, T-cell transfer therapy, and others.
—Mark Gurarie, Health, 16 Mar. 2025
As a result, there is an enormous interest in developing myostatin inhibitors to preserve muscle mass in patients receiving obesity drugs, officials said.
—Pamela McLoughlin, Hartford Courant, 13 Mar. 2025
Enlarged prostate High blood pressure in the lungs (pulmonary hypertension)
PDE5 inhibitors, such as tadalafil or sildenafil, can also treat fluid buildup in the lungs from high elevations.
—Ross Phan, Pharmd, Bcacp, Bcgp, Bcps, Verywell Health, 4 Mar. 2025
See All Example Sentences for inhibitor
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.
Karen Berger, Pharmd, Verywell Health, 27 Mar. 2025
Options include immune checkpoint inhibitors, T-cell transfer therapy, and others.
—Mark Gurarie, Health, 16 Mar. 2025
As a result, there is an enormous interest in developing myostatin inhibitors to preserve muscle mass in patients receiving obesity drugs, officials said.
—Pamela McLoughlin, Hartford Courant, 13 Mar. 2025
Enlarged prostate High blood pressure in the lungs (pulmonary hypertension)
PDE5 inhibitors, such as tadalafil or sildenafil, can also treat fluid buildup in the lungs from high elevations.
—Ross Phan, Pharmd, Bcacp, Bcgp, Bcps, Verywell Health, 4 Mar. 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 12 Apr. 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
Love words? Need even more definitions?
Merriam-Webster unabridged
Share