WordWeight : Weighing the Words

Pronunciation : Di*az"o- (.
Etymology : [Pref. di- + azo-] (Chem.)
Definition : Defn: A combining form (also used adjectively), meaning pertaining to, or derived from, a series of compounds containing a radical of two nitrogen atoms, united usually to an aromatic radical; as, diazo- benzene, C6H5.N2.OH.

Note: Diazo compounds are in general unstable, but are of great importance in recent organic chemistry. They are obtained by a partial reduction of the salts of certain amido compounds. Diazo reactions (Chem.), a series of reactions whereby diazo compounds are employed in substitution. These reactions are of great importance in organic chemistry.
Source : Webster's Unabridged Dictionary, 1913