a gray or white, metallic chemical element, somewhat ductile and malleable, used in alloy steels, superconducting alloys, in jet engines and rockets, etc.: symbol, Nb; at. no. 41
Origin of niobiumModL: so named (1844) by H. Rose (1795-1864), German chemist (for earlier columbium) ; from Classical Greek Niob? (because of its close relationship to tantalum) + -ium: see Niobe and amp; tantalum
A silvery, soft, rare, ductile metallic element that occurs chiefly in columbite-tantalite and is used in steel alloys, arc welding, and superconductive materials. Atomic number 41; atomic weight 92.906; melting point 2,477°C; boiling point 4,744°C; specific gravity 8.57; valence 2, 3, 5. See Periodic Table.
Origin of niobiumAfter Niobe (so called because it is extracted from tantalite).
- a metallic chemical element (symbol Nb) with an atomic number of 41.