\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}.