Dictionary  tel•lu•ri•umPronunciation: (te-loor'ē-um), [key] —n. Chem. 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 in glass and ceramics. Symbol: Te; at. wt.: 127.60; at. no.: 52; sp. gr.: 6.24. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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