Barium Ba"ri*um, n. [NL., fr. Gr. bary`s heavy.] (Chem.) One of the elements, belonging to the alkaline earth group; a metal having a silver-white color, and melting at a very high temperature. It is difficult to obtain the pure metal, from the facility with which it becomes oxidized in the air. Atomic weight, 137. Symbol, Ba. Its oxide called baryta. [Rarely written {barytum}.] [1913 Webster]

Note: Some of the compounds of this element are remarkable for their high specific gravity, as the sulphate, called heavy spar, and the like. The oxide was called barote, by Guyton de Morveau, which name was changed by Lavoisier to baryta, whence the name of the metal. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

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  • Barium — (pronEng|ˈbɛəriəm) is a chemical element. It has the symbol Ba, and atomic number 56. Barium is a soft silvery metallic alkaline earth metal. It is never found in nature in its pure form due to its reactivity with air. Its oxide is historically… …   Wikipedia

  • Barium — Sn (ein Erdalkali Metall) per. Wortschatz fach. (19. Jh.) Neoklassische Bildung. Die deutschen Bergleute gaben einem schweren, neben Erzen gefundenen Mineral den Namen Schwerspat (Spat1). Die Schweden Scheele und Gahn isolierten daraus um 1774… …   Etymologisches Wörterbuch der deutschen sprache

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  • barium — Symbol: Ba Atomic number: 56 Atomic weight: 137.34 Silvery white reactive element, belonging to group 2 of the periodic table. Soluble barium compounds are extremely poisonous. Identified in 1774 by Karl Scheele and extracted in 1808 by Humphry… …   Elements of periodic system

  • barium — 1808, coined in Modern Latin from Gk. barys heavy; so called by its discoverer, English chemist Sir Humphrey Davy (1778 1829), because it was present in the mineral barytes heavy spar (barium sulphate), so named by Lavoisier from Gk. barys heavy… …   Etymology dictionary

  • Barĭum — Barĭum, s. Baryum …   Meyers Großes Konversations-Lexikon

  • Barium — Barium, s. Baryum …   Lexikon der gesamten Technik

  • BARIUM — Apuliae oppid. vulgo BARRI. Barensis agri caput, probe munitum, in ora sinus Veneti. 8. milliar. a Bitonto. Festus sic dictum scribit a conditoribus, qui expulsi ex insul. Bara urbem hanc condiderunt. Hîc Reges Neapolitani coronari solebant.… …   Hofmann J. Lexicon universale

  • barium — BÁRIUM s.n. v bariu. Trimis de LauraGellner, 13.09.2007. Sursa: DN …   Dicționar Român

  • barium — ► NOUN ▪ a soft, reactive metallic chemical element. ORIGIN from BARYTE(Cf. ↑B) …   English terms dictionary

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