'Sulpharsenious' definitions:

Definition of 'Sulpharsenious'

From: GCIDE

Sulpharsenious \Sulph`ar*se"ni*ous\, a. (Chem.) Of, pertaining to, or designating, a hypothetical sulphacid (called also thioarsenious acid) analogous to arsenious acid, and known only in its salts. [1913 Webster]