'Disulphuric acid' definitions:

Definition of 'Disulphuric acid'

From: GCIDE
  • Disulphuric \Di`sul*phu"ric\, a. [Pref. di- + sulphuric.] (Chem.) Applied to an acid having in each molecule two atoms of sulphur in the higher state of oxidation. [1913 Webster]
  • Disulphuric acid, a thick oily liquid, H2S2O7, called also Nordhausen acid (from Nordhausen in the Harts, where it was originally manufactured), {fuming sulphuric acid}, and especially pyrosulphuric acid. See under Pyrosulphuric. [1913 Webster]