Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A silvery, soft, rare, ductile metallic element that occurs chiefly in columbite-tantalite and is used in steel alloys, arc welding, and superconductive materials. Atomic number 41; atomic weight 92.906; melting point 2,477°C; boiling point 4,744°C; specific gravity 8.57; valence 2, 3, 5. cross-reference: Periodic Table.
from The Century Dictionary.
- noun Chemical symbol, Nb; atomic weight, 94. A metal of steel-gray color and brilliant luster.
from the GNU version of the Collaborative International Dictionary of English.
- noun (Chem.) The chemical element of atomic number 41. Chemical symbol Nb. Atomic weight 92.91. Previously called
columbium . See alsocolumbium .
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun a metallic chemical element (symbol Nb) with an
atomic number of 41.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a soft grey ductile metallic element used in alloys; occurs in niobite; formerly called columbium
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
from Wiktionary, Creative Commons Attribution/Share-Alike License
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Examples
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Mr. Hallbauer added: "With limited near-term niobium production on the horizon and demand steadily growing, an open pit mining operation at Aley has strong potential to become a key asset for Taseko."
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Brazil's Companhia Brasileira de Metalurgia e Mineraçào, or CBMM as it is known, produces more than 80% of the world's supply of niobium, which is used to strengthen steel and is widely employed in making cars and natural-gas pipelines.
China Group Taps Into Brazil Miner Alison Tudor 2011
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The company produces more than 80% of the world's supply of niobium, which is used to strengthen steel and is widely employed in making cars and natural-gas pipelines.
Chinese Consortium Buying Stake in Brazilian Miner Alison Tudor 2011
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These minerals are the principal sources of columbium (commonly called niobium), tantalum and molybdenum metals.
Rhenium 2008
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Columbium (also called niobium), like vanadium, is generally considered to increase the hardenability of steel.
CR4 - Recent Forum Threads and Blog Entries S.SARAVANAN 2010
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Columbite is the ore of niobium, which is used in steels and high strength alloys.
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Columbite is the ore of niobium, which is used in steels and high strength alloys.
Lounge of the Lab Lemming Chuck 2010
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Lance Cooley of the Fermi National Accelerator Laboratory is working with a metallic element called niobium to create the next generation of high-energy physics experiments.
PhysOrg.com - latest science and technology news stories 2010
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Lance Cooley of the Fermi National Accelerator Laboratory is working with a metallic element called niobium to create the next generation of high-energy physics experiments.
PhysOrg.com - latest science and technology news stories 2010
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Lance Cooley of the Fermi National Accelerator Laboratory is working with a metallic element called niobium to create the next generation of high-energy physics experiments.
PhysOrg.com - latest science and technology news stories 2010
oroboros commented on the word niobium
Nb.
December 16, 2007