Kata bahasa Indonesia
English word
HYPHEN
WORDNET DICTIONARY
CIDE DICTIONARY
OXFORD DICTIONARY
Link, Gadget and Share 
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]