- noun a shiny pale grey superconducting metallic element used in steel alloys
- A silvery and lustrous, ductile and malleable metallic chemical element whose atomic number is 41. It has over 25 known isotopes, of which one is stable. Its applications in electronics include its use in superconductor alloys, and as a getter in vacuum tubes. It was formerly known as columbium, a designation still used mostly by metallurgists. Its chemical symbol is Nb.
- chemical symbolNb