English definition of Columbium

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Definition of columbium

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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..

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

Columbiferous :: Columbiferous (a.) Producing or containing columbium.

Columbate :: Columbate (n.) A salt of columbic acid; a niobate. See Columbium.

Dianium :: Dianium (n.) Same as Columbium.

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

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..