plural of hepar

(obsolete, chemistry) liver of sulphur; a substance of a liver-brown colour, sometimes used in medicine, formed by fusing sulphur with carbonates of the alkalis (especially potassium).

heparinization

(chemistry, obsolete) A substance of a liver-brown colour obtained by fusing together antimony sulphide with alkaline sulphides, and consisting of sulphantimonites of the alkalis; liver of antimony.