1 definition found From The Collaborative International Dictionary of English v.0.44 [gcide]: Tetrazine \Tet*raz"ine\, noun Also -in \-in\ . [Tetrazo- + -ine.] (Chem.) A hypothetical compound, {C2H2N4} which may be regarded as benzene with four {CH} groups replaced by nitrogen atoms; also, any of various derivatives of the same. There are three isomeric varieties. [Webster 1913 Suppl.]

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