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Niobium. No longer in scientific use.

[After Columbia.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Elements & Compounds) the former name of niobium
[C19: from New Latin, from Columbia, the United States of America]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(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]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
metals, such as columbium, molybdenum, manganese, niobium, titanium and
Complex carbides generally are associated with the chromium carbide deposits that have additions of columbium (niobium), molybdenum, tungsten or vanadium.
The Rocketdyne RS-2101 engine, constructed from Beryllium, Columbium and stainless steel by North American Rockwell/ Rocketdyne, stands 22 inches tall, with a nozzle diameter of 10.5 inches.
The engine, which is constructed from beryllium, niobium (formerly columbium) and stainless steel, is 22in (55.9cm) tall with a nozzle diameter of 10.5in.
However, for a number of materials such as columbium alloys, the Pisarenko-Lebedev criterion describes experimental results poor even for the state of plane stress [6].
elements; aluminum, chromium, cobalt, columbium, molybdenum, nickel,
M2 EQUITYBITES-February 10, 2011-Carpenter Technology Corp reports columbium surcharge to offset rapid and unpredictable changes in columbium prices(C)2011 M2 COMMUNICATIONS
[22] Duwez, P., and Odell, F., 1950, "Relationships in the Binary Systems of Nitrides and Carbides of Zirconium, Columbium, Titanium, and Vanadium," J.