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thiophosphoric acid

American  
[thahy-oh-fos-fawr-ik, -for-] / ˌθaɪ oʊ fɒsˈfɔr ɪk, -ˈfɒr- /

noun

Chemistry.
  1. an acid derived from phosphoric acid by substituting one or more sulfur atoms for oxygen atoms.


Etymology

Origin of thiophosphoric acid

thio- + phosphoric acid