| Pronunciation: | | ku'lumbeeum
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 WordNet Dictionary |
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| | Definition: | |
[n] a former name for niobium |
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COLUMBIUM is a 9 letter word that starts with C. |
| | See Also: | | atomic number 41, Nb, niobium |
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| Webster's 1913 Dictionary |
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| | Definition: | | \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}.
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