amidogen

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 Revised Unabridged Dictionary (1913), United States public domain. See methodology for full licensing detail. Word validity for game play may differ from any official game dictionary.