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niobium

ni·o·bi·um

niobium

 
pronunciation:
naI o bi m
features:
Word Combinations (noun)
part of speech: noun
definition: a chemical element that has forty-one protons in each nucleus and that occurs in pure form as a dense, soft, shiny bluish white solid metal, used esp. in alloys of steel to add strength; columbium. (symbol: Nb)
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