1. A hard, grey, lustrous metallic element that is highly resistant to corrosion; occurs in niobite, fergusonite, and tantalite
   "Tantalum is used in surgical implants due to its corrosion resistance";
   - Ta, atomic number 73

Derived forms: tantalums

Type of: metal, metallic element

Part of: columbite, fergusonite, niobite, tantalite

Encyclopedia: Tantalum