Tel-lū'ri-ūm, n.

n. [From Lat. tellus, telluris, the earth; Fr. tellure.] (Chem.) A metal discovered by Müller in 1782, combined with gold and silver in the ores, and received from the Bannat of Temeswar. It is of a silver-white color, and in its chemical properties closely resembles sulphur and selenium.

Graphic tellurium (Min.), a mineral, usually of a steel-gray or silver-white color, and metallic luster, consisting chiefly of tellurium, gold, and silver;—so called from the arrangement of the crystals like writing characters. Dana.—Tellurium glance, a blackish or lead-gray sectile mineral, of a splendent luster, consisting chiefly of tellurium, sulphur, lead, and gold;—called also black tellurium. Dana.—Tellurium salt. (Chem.) See SALT.