American Heritage® Dictionary of the English Language, Fourth Edition
- n. A silvery, soft, ductile metallic element that occurs chiefly in columbite-tantalite and is used in steel alloys, arc welding, and superconductivity research. Atomic number 41; atomic weight 92.906; melting point 2,468°C; boiling point 4,927°C; specific gravity 8.57; valence 2, 3, 5. See Table at element.
Century Dictionary and Cyclopedia
- n. Chemical symbol, Nb; atomic weight, 94. A metal of steel-gray color and brilliant luster. It was first discovered by Hatchett, in 1801, in a mineral obtained at Haddam, Connecticut. This metal, however, which Hatchett called
columbium, was reexamined by Wollaston and pronounced identical with tantalum. Forty years later it was again discovered by H. Rose, who gave it the name of niobium, which is now generally adopted. Rose for some time believed that with the niobium another new metal (pelopium) was associated: but later he recognized the fact that the two were one and the same thing. Niobium has a specific gravity of about 4 (Roscoe). When heated in the air, it takes fire at a low temperature and burns with a vivid light. The chemical relations of the metal are akin to those of bismuth and antimony. See tantalite, columbite, and yttro-tantatile.
- n. a metallic chemical element (symbol Nb) with an atomic number of 41.
GNU Webster's 1913
- n. (Chem.) The chemical element of atomic number 41. Chemical symbol Nb. Atomic weight 92.91. Previously called
columbium. See also columbium.
- n. a soft grey ductile metallic element used in alloys; occurs in niobite; formerly called columbium
- After Niobe, because of the element's affinity with tantalum. (Wiktionary)
- After Niobe (so called because it is extracted from tantalite). (American Heritage® Dictionary of the English Language, Fourth Edition)
“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.”
“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.”
“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.”
“These minerals are the principal sources of columbium (commonly called niobium), tantalum and molybdenum metals.”
“Columbite is the ore of niobium, which is used in steels and high strength alloys.”
“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.”
“Columbium (also called niobium), like vanadium, is generally considered to increase the hardenability of steel.”
“China produces 95 percent of all rare earth concentrates, which are used in the production of many consumer electronics, and Brazil supplies 90 percent of all niobium, which is needed for steel alloys.”
“Brasileira de Metalurgia e Mineracao and China's role in niobium supply.”
“CBMM mines and processes niobium, a key rare metal used to produce high-end products such as automotive steel and pipelines.”
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All the scientific words found in the official EU nomenclature. For the screening I used Vocabgrabber of the Visual Thesaurus.
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A list of chemical elements
a reflection on :
Indo-European root stāk- to stand, place
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