Hypertext Webster Gateway: "niobium"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Niobium \Ni*o"bi*um\, n. [NL., fr. L. & E. {Niobe}.] (Chem.)
A later name of columbium. See {Columbium}.
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Columbium \Co*lum"bi*um\, n. [NL., fr. Columbia America.]
(Chem.)
A rare element of the vanadium group, first found in a
variety of the mineral columbite occurring in Connecticut,
probably at Haddam. Atomic weight 94.2. Symbol Cb or Nb. Now
more commonly called {niobium}.
From WordNet (r) 1.7 (wn)
niobium
n : a soft gray ductile metallic element used in alloys; occurs
in niobite; formerly called columbium [syn: {Nb}, {atomic
number 41}]
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