Tellurium

n. rare crystalline element (Chemistry)

Tellurium (IPA: ) is a chemical element that has the symbol Te and atomic number 52. A brittle silver-white metalloid which looks like tin, tellurium is chemically related to selenium and sulfur. Tellurium is primarily used in alloys and as a semiconductor.
See more at Wikipedia.org...

Noun
1. a brittle silver-white metalloid element that is related to selenium and sulfur; it is used in alloys and as a semiconductor; occurs mainly as tellurides in ores of copper and nickel and silver and gold
(synonym) Te, atomic number 52
(hypernym) chemical element, element
(substance-holonym) telluride

n. tellurium, rare crystalline element (Chemistry)

(n.)
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.