Thesaurus: hyposulphuric

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1. a. Pertaining to, or containing, sulphur in a lower state of oxidation than in the sulphuric compounds; as, hyposulphuric acid.
2. Pertaining to, or containing, sulphur in a lower state of oxidation than in the sulphuric compounds; as, hyposulphuric acid. Hyposulphuric acid, an acid, H2S2O6, obtained by the action of manganese dioxide on sulphur dioxide, and known only in a watery solution and in its salts; -- called also dithionic acid. See Dithionic.
3. Pertaining to, or containing, sulphur in a lower state ofoxidation than in the sulphuric compounds; as, hyposulphuric acid.Hyposulphuric acid, an acid, H2S2O6, obtained by the action ofmanganese dioxide on sulphur dioxide, and known only in a waterysolution and in its salts; -- called also dithionic acid. SeeDithionic.