Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A hard, silvery-white metallic element used to toughen alloy steels and soften tungsten alloy. An essential trace element in plant nutrition, it is used in fertilizers, dyes, enamels, and reagents. Atomic number 42; atomic weight 95.94; melting point 2,617°C; boiling point 4,612°C; specific gravity 10.22 (at 20°C); valence 2, 3, 4, 5, 6. See Table at element.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A metallic chemical element (symbol Mo) with an atomic number of 42.

from the GNU version of the Collaborative International Dictionary of English

  • n. A rare element of the chromium group, occurring in nature in the minerals molybdenite and wulfenite, and when reduced obtained as a hard, silver-white, difficulty fusible metal. Symbol Mo. Atomic number 42. Atomic weight 95.94.

from The Century Dictionary and Cyclopedia

  • n. Chemical symbol, Mo; atomic weight, 95. 8. A metal of a silver-white color, but harder than silver, which fuses with difficulty, if at all, at the highest temperature of a wind-furnace.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a polyvalent metallic element that resembles chromium and tungsten in its properties; used to strengthen and harden steel

Etymologies

New Latin, from earlier molybdena, lead ore, from Latin molybdaena, galena, from Greek molubdaina, from molubdos, lead.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From New Latin molybdenum, from Ancient Greek μόλυβδος ("lead"), because the two elements are so similar they were often confused. (Wiktionary)

Examples

  • If copper is the life blood of the economy, I call molybdenum the glue of the economy.

    SeekingAlpha.com: Home Page

  • Taken together, the interests in both miners are likely to make Sichuan Hanlong a major player in the global market for molybdenum, which is commonly used in steel alloys and to remove sulfur impurities from petroleum products.

    China Firm Seeks Australian Mine Deals

  • The deal is likely to make Sichuan Hanlong a major player in the global market for molybdenum, which is commonly used in steel alloys and to remove sulfur impurities from petroleum products.

    Corporate Watch

  • Production of molybdenum, which is used in the making of steel, decreased 28%.

    Freeport-McMoRan's Earnings Decline 37%

  • It also said its operations for molybdenum, which is used in the making of steel, are likely to remain weaker than normal.

    Freeport-McMoRan Net Falls

  • The reactors produce material called molybdenum-99 that decays into technetium-99m, which is the most commonly used medical isotope in the U.S.

    Closure of Canadian Nuclear Reactor Hampers Medical Sector

  • The Metals Week Dealer Oxide price for molybdenum, which is used in steelmaking, had fallen to $9 on Monday from about $30 a pound in October, hurt by the slump in demand for steel.

    Freeport Cuts Spending, Output

  • Freeport, based in Phoenix, said it is slashing its 2009 capital-expenditure budget by 52%, to $1.1 billion from a prior estimate of $2.3 billion, because of sharply lower prices of copper and molybdenum, which is used to strengthen steel.

    Freeport Cuts Spending, Output

  • Many times I typed the word molybdenum, uncertain how it might be said.

    Molybdenum

  • Sales of copper, gold and molybdenum, which is used to strengthen steel, all topped the company's expectations.

    Freeport-McMoRan 4Q earnings jump on higher prices - Yahoo! Finance

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