diazine

listen to the pronunciation of diazine
الإنجليزية - الإنجليزية
Any six-membered aromatic heterocycle containing four carbon atoms, two nitrogen atoms and three double bonds
{i} isomeric compound (Chemistry)
an aromatic compound in which two CH groups of a benzene ring have been replaced with N; especially the three isomers of formula C{4}H{4}N{2}