EUPHORBIUM, an acrid dull-yellow or brown resin, con sisting of the concreted milky juice of several species of Euphor bia, cactus-like perennial plants indigenous to Morocco. It dis solves in alcohol, ether, and turpentine ; in water it is only slightly soluble. It consists of two or more resins and a substance euphor bone, C,OH3,0 or In former times euphorbium was valued in medicine for its drastic purgative and emetic properties.