Bible Dictionaries
Pyrosulphuric

Webster's Dictionary

(a.) Pertaining to, or designating, an acid called also disulphuric acid) obtained by distillation of certain sulphates, as a colorless, thick, oily liquid, H2S2O7 resembling sulphuric acid. It is used in the solution of indigo, in the manufacture of alizarin, and in dehydration.

Bibliography Information
Webster, Noah. Entry for 'Pyrosulphuric'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​p/pyrosulphuric.html. 1828.