1. (

• tellurium ,
• Te ,
• atomic_number_ ,

) 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 ;

2. (

• ti ,
• te ,
• si

) the syllable naming the seventh (subtonic) note of any musical scale in solmization ;