noun (n)

• 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(noun.substance)

  Synonym:
  atomic number 52, tellurium
  

  source: wordnet30
• the syllable naming the seventh (subtonic) note of any musical scale in solmization(noun.communication)

  Synonym:
  si, ti
  

  source: wordnet30