niobium niobium  /ˌnaɪ ˈoʊ bi əm/


  • (n) a soft grey ductile metallic element used in alloys; occurs in niobite; formerly called columbium




  1. The sphere will be placed inside an evacuated quartz shell, also coated with niobium, and suspended in an electrostatic field.
  2. Instead of oil drops, the Fairbank team relied on tiny spheres of niobium, a metal that becomes a superconductor when it is chilled to near absolute zero.
  3. The Bell Telephone Laboratories discovered that an alloy of tin and niobium remains superconducting in strong magnetic fields.


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