a. [ See Sulphur, Cyanic. ] (Chem.) Of, pertaining to, derived from, or designating, a sulphacid,
a. (Chem.) Pertaining to, or designating, an acid,
a. (Chem.) Pertaining to, or designating, a yellow crystalline substance (called also perthiocyanic acid), analogous to sulphocyanic acid, but containing more sulphur. [ 1913 Webster ]