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5 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 ni·o·bi·um /naɪˈobiəm/
 鈮

From: DICT.TW English-Chinese Medical Dictionary 英漢醫學字典

 ni·o·bi·um /naɪˈobɪəm/ 名詞
 鈮

From: Webster's Revised Unabridged Dictionary (1913)

 ni·o·bi·um n.  Chem. The chemical element of atomic number 41.  Chemical symbol Nb.  Atomic weight 92.91.  Previously called columbium. See also Columbium.

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From: WordNet (r) 2.0

 niobium
      n : a soft gray ductile metallic element used in alloys; occurs
          in niobite; formerly called columbium [syn: Nb, {atomic
          number 41]

From: Elements database 20001107

 niobium
 Symbol: Nb
 Atomic number: 41
 Atomic weight: 92.906
 Soft, ductile grey-blue metallic transition element. Used in special
 steels and in welded joints to increase strength. Combines with halogens
 and oxidizes in air at 200 degrees celsius. Discovered by Charles Hatchett
 in 1801 and isolated by Blomstrand in 1864. Called columbium originally.