Gallium

Gallium
A rare metal with the atomic weight of 69. There are several isotopic forms of gallium that differ from it in atomic weight. One is gallium-68 which is produced by cyclotrons and emits gamma rays. The citrate form of gallium-68 is used as a radiotracer to locate sites of inflammation and tumor tissue within the body.
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A rare metal, atomic no. 31, atomic wt. 69.723. [L. Gallia, France]

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gal·li·um 'gal-ē-əm n a rare bluish white metallic element that is hard and brittle at low temperatures but melts just above room temperature and expands on freezing and that is used in the form of its hydrated nitrate salt Ga(NO3)3·9H2O to treat hypercalcemia caused by certain cancers symbol Ga see ELEMENT (table)

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n.
a silvery metallic element. A radioisotope of gallium can be used for the detection of lymphomas and areas of infection (such as an abscess) following intravenous injection. This technique is being replaced by other methods of imaging with lower radiation doses and better anatomical resolution.

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gal·li·um (Ga) (galґe-əm) [L., from Gallia Gaul] a rare metal liquid at room temperature; atomic number 31, atomic weight 69.72; some of its compounds are poisonous.

Medical dictionary. 2011.

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Look at other dictionaries:

  • Gallium — Zinc ← Gallium → Germanium Al …   Wikipédia en Français

  • GALLIUM — De Gallia , France Symbole chimique: Ga Numéro atomique: 31 Masse atomique: 69,72 Point de fusion: 29,78 0C Point d’ébullition: 2 403 0C Densité (à 29,6 0C): 5,904. Métal très facilement liquéfiable, découvert par Paul Émile Lecoq de Boisbaudran… …   Encyclopédie Universelle

  • Gallium — Gal li*um, n. [NL.; perh. fr. L. Gallia France.] (Chem.) A rare metallic element, found combined in certain zinc ores. It is white, hard, and malleable, resembling aluminium, and remarkable for its low melting point (86[deg] F., 30[deg] C.).… …   The Collaborative International Dictionary of English

  • gallium — Symbol: Ga Atomic number: 31 Atomic weight: 69.72 Soft silvery metallic element, belongs to group 13 of the periodic table. The two stable isotopes are Ga 69 and Ga 71. Eight radioactive isotopes are known, all having short half lives. Gallium… …   Elements of periodic system

  • Gallĭum — Ga, Metall, findet sich in sehr geringer Menge in Zinkblende von Bensberg und Pierrefitte, in der gelben asturischen Blende, im Toneisenstein vom Clevelanddistrikt in Yorkshire, auch in andern Eisenerzen, in Mangan , Nickel , Kobalt , Zinnerzen,… …   Meyers Großes Konversations-Lexikon

  • Gallium — Ga (Atomgew. 69,9, spez. Gew. 5,9), sehr seltenes, im Jahre 1875 von Lecocq de Boisbaudran in Zinkblende mittels der Spektralanalyse entdecktes weißes Metall, bei 30° C. bereits schmelzend. In Salzsäure, Ammoniak und Kalilauge löslich. Mit… …   Lexikon der gesamten Technik

  • Gallium — Gallĭum (chem. Zeichen Ga), Metall, findet sich in Spuren in Zinkblende, ist in reiner Gestalt weiß, von 5,95 spez. Gewicht, schmilzt bei 30°, läßt sich schneiden und hämmern …   Kleines Konversations-Lexikon

  • Gallium — er et letsmelteligt metal …   Danske encyklopædi

  • gallium — metalic element, discovered by spectral lines in 1875 by French chemist Lecoq de Boisbaudran (1838 1912), who named it apparently in honor of his homeland (see GALLIC (Cf. Gallic)), but it has been suggested that he also punned on his own name… …   Etymology dictionary

  • gallium — [gal′ē əm] n. [ModL: so named (1875) by P. E. Lecoq de Boisbaudran (1838 1912), Fr chemist, after L Gallia, France, and as a pun on his name Lecoq (in L, gallus, a cock) + IUM] a bluish white, metallic chemical element, often a supercooled liquid …   English World dictionary

  • Gallium — Infobox galliumGallium (pronEng|ˈgæliəm) is a chemical element that has the symbol Ga and atomic number 31. A soft silvery metallic poor metal, gallium is a brittle solid at low temperatures but liquefies slightly above room temperature and will… …   Wikipedia

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