Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of niobium is as below...

Euxenite :: Euxenite (n.) A brownish black mineral with a metallic luster, found in Norway. It contains niobium, titanium, yttrium, and uranium, with some other metals..

Eschynite :: Eschynite (n.) A rare mineral, containing chiefly niobium, titanium, thorium, and cerium. It was so called by Berzelius on account of the inability of chemical science, at the time of its discovery, to separate some of its constituents..

Pelopium :: Pelopium (n.) A supposed new metal found in columbite, afterwards shown to be identical with columbium, or niobium..

Columbium :: Columbium (n.) 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..

Columbic :: Columbic (a.) Pertaining to, or containing, columbium or niobium; niobic..

Niobium :: Niobium (n.) A later name of columbium. See Columbium.

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