a. [ From Amide. ] (Chem.) Containing, or derived from, amidogen. [ 1913 Webster ]

Amido acid, an acid in which a portion of the nonacid hydrogen has been replaced by the amido group. The amido acids are both basic and acid. --
Amido group, amidogen, NH2. [ 1913 Webster ]

n. [ Amide + -gen. ] (Chem.) 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. [ 1913 Webster ]

n. [ Amide + -ol as in alcohol. ] (Photog. & Chem.) A salt of a diamino phenol, C6H3(OH)(NH2)2, used as a developer. [ Webster 1913 Suppl. ]