niobium.
(From Niobe, daughter of Tantalus, and -io).
1. m. chemical element of no. atóm. 41 Metal in the Earth's crust is found in some minerals, always with the tantalum. Bright grey, soft, ductile, malleable and resistant to corrosion. It is used in industry nuclear and alloyed with iron, in metallurgy. It was also known as columbium. (Símb.) Nb).
