DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   atomic number 73
       n 1: a hard grey lustrous metallic element that is highly
            resistant to corrosion; occurs in niobite and fergusonite
            and tantalite [syn: tantalum, Ta, atomic number 73]