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Definition of Thioacid
1. Noun. (chemistry) Any acid formally derived from an oxyacid by replacement of one or more oxygen atoms with sulfur ¹
¹ Source: wiktionary.com
Medical Definition of Thioacid
1. An organic acid in which one or more of the oxygen atoms have been replaced by sulfur atoms; e.g., thiosulfuric acid. Synonym: sulfacid, sulfoacid. (05 Mar 2000)