ˌiməˈdaˌzōl -ˌdaˈz- noun
Etymology: International Scientific Vocabulary imid- + azole
1. : a white crystalline heterocyclic base C 3 H 4 N 2 made by the action of ammonia and formaldehyde on glyoxal and isomeric with pyrazole; 1,3-diazole — called also glyoxaline ; compare structural formula
2. : any of a large class of derivatives of imidazole including histidine and histamine