molybdenum


molybdenum
molybdenum (n.) metallic element, 1816, from molybdena, used generally for lead-like minerals, from Gk. molybdos "lead," also "black graphite," related to L. plumbum "lead" (see PLUMB (Cf. plumb) (n.)), and like it probably borrowed from a lost Mediterranean language, perhaps Iberian. The element so called because of its resemblance to lead ore.

Etymology dictionary. 2014.

Look at other dictionaries:

  • molybdenum — Symbol: Mo Atomic number: 42 Atomic weight: 95.94 Silvery white, hard metallic transition element. It is chemically unreactive and is not affected by most acids. It oxidizes at high temperatures. There are seven natural isotopes, and four… …   Elements of periodic system

  • Molybdenum — Mol yb*de num, n. [NL.: cf. F. molybd[ e]ne. See {Molybdena}.] (Chem.) 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… …   The Collaborative International Dictionary of English

  • molybdenum — [mə lib′də nəm] n. [ModL: so named (1781) by K. W. Scheele (see SCHEELITE) after its isolation by P. J. Hjelm (1746 1813), Swed chemist < molybdaena, molybdenite, term used because of resemblance to lead ore < L molybdaena, lead, galena… …   English World dictionary

  • Molybdenum — niobium ← molybdenum → technetium Cr ↑ Mo ↓ W …   Wikipedia

  • molybdenum — /meuh lib deuh neuhm/, n. Chem. a silver white metallic element, used as an alloy with iron in making hard, high speed cutting tools. Symbol: Mo; at. wt.: 95.94; at. no.: 42; sp. gr.: 10.2. [1810 20; < NL, alter. of earlier molybdena < L… …   Universalium

  • molybdenum — noun Etymology: New Latin, from molybdena, a lead ore, molybdenite, molybdenum, from Latin molybdaena galena, from Greek molybdaina, from molybdos lead Date: 1814 a metallic element that resembles chromium and tungsten in many properties, is used …   New Collegiate Dictionary

  • molybdenum — A silvery white metallic element, atomic no. 42, atomic wt. 95.94; a bioelement found in a number of proteins ( e.g., xanthine oxidase). See m. target tube. [G. molybdaina, a piece of lead; a …   Medical dictionary

  • molybdenum-99 — A reactor produced radioisotope of molybdenum with a half life of 2.7476 days, used in radionuclide generators for the production of technetium 99m …   Medical dictionary

  • molybdenum — мед. молибден (molybdenum)  Микроэлемент.   Способствует метаболизму жиров и углеводов.   Жизненно важен для усвоения железа.   Участвует в производстве мочевой кислоты. см. тж микроэлементы …   Универсальный дополнительный практический толковый словарь И. Мостицкого

  • molybdenum — molibdenas statusas T sritis chemija apibrėžtis Cheminis elementas. simbolis( iai) Mo atitikmenys: lot. molybdaenum angl. molybdenum rus. молибден …   Chemijos terminų aiškinamasis žodynas


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