diazole

Noun

 * 1)  Either of two unsaturated heterocycles consisting of a five-membered ring containing three carbon atoms, two nitrogen atoms and two double bonds - namely pyrazole and imidazole

Derived terms

 * 1,2-diazole pyrazole
 * 1,3-diazole imidazole

Related terms

 * di-
 * azole
 * oxadiazole