# omeprazole

> English word · Noun · IPA /əʊˈmɛp.ɹə.zəʊl/ · frequency rank #95,213

## Definitions
1. A substituted benzimidazole (trademark Losec, Prilosec) which is a proton pump inhibitor and inhibits secretion of gastric acid, being given orally in the treatment of ulcers and gastroesophageal reflux; 5-methoxy-2-(4-methoxy-3,5-dimethyl-2-pyridylmethylsulfinyl)benzimidazole, C₁₇H₁₉N₃O₃S.

## Etymology
From o(xy)- + me(tho)- + -prazole (“benzimidazole derivative”).

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/omeprazole