Source : Webster's Revised Unabridged Dictionary (1913)

Hepar \He"par\, n. [L. hepar, hepatis, the liver, Gr. ?.]
   1. (Old Chem.) Liver of sulphur; a substance of a liver-brown
      color, sometimes used in medicine. It is formed by fusing
      sulphur with carbonates of the alkalies (esp. potassium),
      and consists essentially of alkaline sulphides. Called
      also {hepar sulphuris}.

   2. Any substance resembling hepar proper, in appearance;
      specifically, in homeopathy, calcium sulphide, called also
      {hepar sulphuris calcareum} (?).

   {Hepar antimonii}(Old Chem.), a substance, of a liver-brown
      color, obtained by fusing together antimony sulphide with
      alkaline sulphides, and consisting of sulphantimonites of
      the alkalies; -- called also {liver of antimony}.