• (a.) Of, pertaining to, or designating, hypothetical sulphacid of tungsten (called also sulphowolframic acid), analogous to sulphuric acid, and known in its salts.
Sul`pho·tung'stic adjective (Chemistry) Of, pertaining to, or designating, hypothetical sulphacid of tungsten (called also sulphowolframic acid ), analogous to sulphuric acid, and known in its salts.