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: C C- C. C2 Ca Cb Cc Cd Ce Cf Cg Ch Ci Cj Cl Cm Cn Co Cp Cr Cs Ct Cu Cv Cw Cx Cy Cz
columbiformes | columbin | columbine | columbite | columbite-tantalite | columbium | columbo | columbus | columbus day | columella | columelliform

columbium

 : 
Noun
 : 
co=lum=bi=um

CIDE DICTIONARY

columbiumn. [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]

OXFORD DICTIONARY

columbium, n. US Chem. = NIOBIUM.


For further exploring for "columbium" in Webster Dictionary Online


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