Sulphonic :: Sulphone (n.) Any one of a series of compounds analogous to the ketones, and consisting of the sulphuryl group united with two hydrocarbon radicals; as, dimethyl sulphone, (CH/)/.SO/..
Sulphonium :: Sulphonic (a.) Pertaining to, or derived from, a sulphone; -- used specifically to designate any one of a series of acids (regarded as acid ethereal salts of sulphurous acid) obtained by the oxidation of the mercaptans, or by treating sulphuric acid with certain aromatic bases (as benzene); as, phenyl sulphonic acid, C6H5.SO2.OH, a stable colorless crystalline substance..