We don't have synonyms for amidogen yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are smidgen, imidogen and mitogen.
(n) :
(inorganic chemistry, dated) The amino radical, •NH₂, the neutral form of the amide ion −NH₂⁻, regardable as the ammonia molecule with one of its hydrogen atoms removed.
(n) :
(inorganic chemistry, dated) The amino radical, •NH₂, the neutral form of the amide ion −NH₂⁻, regardable as the ammonia molecule with one of its hydrogen atoms removed.