(ˈ)īs also (ˈ)īz+ noun
Etymology: International Scientific Vocabulary is- + oxazole
1. : a liquid heterocyclic compound C 3 H 3 NO that is isomeric with oxazole, has a penetrating odor like that of pyridine, and is made by the action of hydroxylamine on propiolaldehyde
2. : a derivative of isoxazole