Wiktionary
metiamide
n. An H2-receptor antagonist developed from burimamide, an intermediate compound in the development of the successful antiulcer drug cimetidine.
Wikipedia
Metiamide
Metiamide is a histamine H receptor antagonist developed from another H antagonist, burimamide. It was an intermediate compound in the development of the successful anti-ulcer drug cimetidine (Tagamet).