Sulpharsenious :: Sulpharsenic (a.) Of, pertaining to, or designating, a hypothetical sulphacid (called also thioarsenic acid) analogous to arsenic acid, and known only in its salts..
Sulpharsenite :: Sulpharsenious (a.) Of, pertaining to, or designating, a hypothetical sulphacid (called also thioarsenious acid) analogous to arsenious acid, and known only in its salts..
Sulphoarsenic :: Sulpho- () A prefix (also used adjectively) designating sulphur as an ingredient in certain compounds. Cf. Thio-.