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Niobium. No longer in scientific use.

[After Columbia.]


(Elements & Compounds) the former name of niobium
[C19: from New Latin, from Columbia, the United States of America]


(naɪˈoʊ bi əm)

a steel-gray metallic element resembling tantalum in its chemical properties; becomes a superconductor below 9 K; used chiefly in alloy steels. Symbol: Nb; at. no.: 41; at. wt.: 92.906; sp. gr.: 8.4 at 20°C.
[1835–45; < New Latin; see Niobe, -ium2]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.columbium - a former name for niobium
atomic number 41, Nb, niobium - a soft grey ductile metallic element used in alloys; occurs in niobite; formerly called columbium
References in periodicals archive ?
Taking into account that for these materials the parameter values got by the finite element method calculation are close to the values P=16/9, Q=-8/9, F=-7/63 got by the model of the polycrystal with the use of the deformation homogeneity hypothesis, for materials with the cubic crystal lattice in the work [7] two-parameter strength criterion was proposed which describes the strength of columbium alloys well.
Interestingly, at the same time columbium was considered the material for the X-20 DYNA-SOAR, but the amount required exceeded the world's annual production of the element.
backlot (1) Columbium columbarium columbarium Copper cropped cropped Curium Urumchi RHD Urumchi RHD Dubnium
Now metals in the series, such as tantalite, niobium and columbium, are in great demand because of their super-conductivity, anti-corrosion, high melting point and chemical contribution to lightweight steel.