tantalum.
(Of Tántalo, mythological character).
1. m. chemical element of no. atóm. 73 Metal in the Earth's crust, its salts are certain minerals, always accompanying niobium. Grey, heavy, hard, ductile, and highly resistant to corrosion. It is used to manufacture material surgical and dental, as well as prostheses and grafts, and as a catalyst and in the electronics industry. (Símb.) Ta).
