Source : Webster's Revised Unabridged Dictionary (1913)

Hydrosulphuric \Hy`dro*sul*phu"ric\, a. [Hydro-, 2 + sulphuric.]
   (Chem.)
   Pertaining to, or derived from, hydrogen and sulphur; as,
   hydrosulphuric acid, a designation applied to the solution of
   hydrogen sulphide in water.