Search Result for "columbium": 
Wordnet 3.0

NOUN (1)

1. a former name for niobium;


The Collaborative International Dictionary of English v.0.48:

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. [1913 Webster]
The Collaborative International Dictionary of English v.0.48:

niobium \ni*o"bi*um\, n. [NL., fr. L. & E. Niobe.] (Chem.) The chemical element of atomic number 41. Chemical symbol Nb. Atomic weight 92.91. Previously called columbium. See also Columbium. [1913 Webster]
WordNet (r) 3.0 (2006):

columbium n 1: a former name for niobium
The Elements (07Nov00):

columbium The original name for niobium.