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Definition of Thiosulfuric acid
1. Noun. (inorganic compound) An unstable acid, H2S2O3, formally derived from sulfuric acid by the substitution of a sulfur atom for an oxygen one; it is known only in solution or as its salts and esters, the thiosulfates. ¹
¹ Source: wiktionary.com
Medical Definition of Thiosulfuric acid
1. H2S2O3;sulfuric acid in which an atom of oxygen has been replaced by one of sulfur. (05 Mar 2000)