ˈte.trəˌzēn, -_zə̇n noun
( -s )
Etymology: International Scientific Vocabulary tetraz- + -ine
1. : any of three isomeric parent compounds C 2 H 2 N 4 that may be regarded as benzene with four methylidyne groups replaced by nitrogen atoms ; especially : the symmetrical or 1,2,4,5-isomer forming very volatile unstable purple-red crystals
2. : any of various derivatives of the tetrazines