Amidogen
Pronunciation : A*mid"o*gen
Part of Speech : n.
Etymology : [Amide + -gen.] (Chem.)
Definition : Defn: A compound radical, NH2, not yet obtained in a separate state, which may be regarded as ammonia from the molecule of which one of its hydrogen atoms has been removed; -- called also the amido group, and in composition represented by the form amido.
Source : Webster's Unabridged Dictionary, 1913