thiocyanic acid
noun
thio·cyanic acid
¦thī(ˌ)ō+…-
: an unstable liquid acid HSCN or HNCS of strong odor that is usually obtained by distilling a thiocyanate salt with dilute sulfuric acid and that polymerizes readily see isothiocyanic acid
Word History
Etymology
thiocyanic International Scientific Vocabulary thi- + cyanic