Real Dictionary

tellurium in American English
a rare, tin-white, brittle, nonmetallic chemical element, belonging to the same family of elements as sulfur and selenium and occurring naturally in mineral tellurite and tellurides: it is used as a glass tint, as an alloying material, and in thermoelectr
noun: a rare, lustrous, brittle, crystalline, silver-white element resembling sulfur in its properties, and usually occurring in nature combined with gold, silver, or other metals of high atomic weight: used in the manufacture of alloys and as a coloring agent

tellurium in British English
noun: a brittle silvery-white nonmetallic element occurring both uncombined and in combination with metals: used in alloys of lead and copper and as a semiconductor. Symbol: Te; atomic no: 52; atomic wt: 127.60; valency: 2, 4, or 6; relative density: 6.24; melt