omeprazole

omep·ra·zole

noun
\ō-ˈmep-rə-ˌzōl, -ˈmē-prə-, -ˌzȯl\

Definition of OMEPRAZOLE

: a benzimidazole derivative C₁₇H₁₉N₃O₃S that inhibits gastric acid secretion and is used in the short-term treatment of duodenal and gastric ulcers as well as the treatment of gastroesophageal reflux, erosive esophagitis, and disorders (as Zollinger-Ellison syndrome) involving gastric acid hypersecretion—see prilosec