thioacid

thi·o·ac·id

(thī'ō-as'id),
An organic acid in which one or more of the oxygen atoms have been replaced by sulfur atoms; for example, thiosulfuric acid.
Synonym(s): sulfacid, sulfoacid (1)

thi·o·ac·id

(thī'ō-as'id)
An organic acid in which one or more of the oxygen atoms have been replaced by sulfur atoms, e.g., thiosulfuric acid.