Word Study
columbiformes |
columbin |
columbine |
columbite |
columbite-tantalite |
columbium
| columbo
| columbus
| columbus day
| columella
| columelliform
columbium
WORDNET DICTIONARY
Noun columbium has 1 sense
CIDE DICTIONARY
columbium, n. [NL., fr. Columbia America.].
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 . [1913 Webster]
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