
• (a.) Pertaining to, or containing, sulphur in a lower state of oxidation than in the sulphuric compounds; as, hyposulphuric acid.
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http://thinkexist.com/dictionary/meaning/hyposulphuric/

<chemistry> 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. ... Synonym: dithionic acid. ... See: dithionic....
Found on
http://www.encyclo.co.uk/local/20973

Hy`po·sul·phur'ic adjective [ Prefix hypo- + sulphuric .] (Chemistry) Pertaining to, or containing, sulphur in a lower state of oxidation than in the sulphuric compounds; as, hyposulphuric acid. Hyposulphuric acid , an acid, H 2 S 2 O
Found on
http://www.encyclo.co.uk/webster/H/84
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