Tetrazo-
Pronunciation : Tet*raz"o-
Part of Speech : a.
Etymology : [Tetra- + azo-.] (Chem.)
Definition : Defn: A combining form (also used adjectively), designating any one of a series of double derivatives of the azo and diazo compounds containing four atoms of nitrogen.
Source : Webster's Unabridged Dictionary, 1913