proton pump inhibitors

Definition of proton pump inhibitor

proton pump inhibitor

(PROH-ton … in-HIH-bih-ter)
A substance used to treat certain disorders of the stomach and intestines, such as heartburn and ulcers. Proton pump inhibitors block the actions of an enzyme in the stomach and reduce the amount of acid made in the stomach. Also called PPI.

Source: NCI Dictionary of Cancer Terms