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De - Pt| English Dictionary: Columbium | by the DICT Development Group |
| 3 results for Columbium | |
| From WordNet (r) 3.0 (2006) [wn]: | |
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| From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
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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 The Elements (22Oct97) [elements]: | |
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columbium The original name for {niobium}. | |
