Tellurium /(?)/

Tel·lu·ri·um

Tellurium

n.
  1. A rare nonmetallic element, analogous to sulphur and selenium, occasionally found native as a substance of a silver-white metallic luster, but usually combined with metals, as with gold and silver in the mineral sylvanite, with mercury in Coloradoite, etc. Symbol Te. Atomic weight 125.2. (Chem.)

Phrases & Compounds
Graphic tellurium
See Sylvanite.
Tellurium glance
nagyagite; -- called also black tellurium.