bn:00006872n
Noun Concept
Categories: BCC crystal habit, Chemical elements, Transition metals, Articles with short description, Native element minerals
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niobium  Nb  atomic number 41  Cb  columbium
EN
A soft grey ductile metallic element used in alloys; occurs in niobite; formerly called columbium WordNet 3.0
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A soft grey ductile metallic element used in alloys; occurs in niobite; formerly called columbium WordNet 3.0 & Open English WordNet
Niobium, or columbium, is a chemical element with the chemical symbol Nb and atomic number 41. Wikipedia
Chemical element with symbol Nb and atomic number 41, shiny grey transition metal. OmegaWiki
A chemical element (symbol Nb) with an atomic number of 41: a light grey, crystalline, ductile transition metal used in superconducting materials. Wiktionary
Chemical element. Wiktionary (translation)
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