selenium
noun Etymology: New Latin, from Greek selēnē moon, from selas brightness Date: 1818 a photosensitive element that occurs in both crystalline and amorphous forms, is obtained chiefly as a by-product in copper refining, and is used especially in glass, semiconductor devices, and alloys — see element table

New Collegiate Dictionary. 2001.

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  • Selenium — (pronEng|səˈliniəm) is a chemical element with the atomic number 34, represented by the chemical symbol Se, an atomic mass of 78.96. It is a nonmetal, chemically related to sulfur and tellurium, and rarely occurs in its elemental state in nature …   Wikipedia

  • Sélenium — Sélénium Sélénium Arsenic …   Wikipédia en Français

  • SÉLÉNIUM — Le sélénium a été découvert en 1817 par Jöns Jacob Berzelius dans les boues des chambres de plomb utilisées pour la préparation de l’acide sulfurique. C’est un élément rare, présent très souvent à l’état de traces dans les sulfures naturels où il …   Encyclopédie Universelle

  • Selenium — Entwickler ThoughtWorks Aktuelle Version 2.11.0 (28. Oktober 2011) Betriebssystem Microsoft Windows, Linux, Mac OS X, Solaris, FreeBSD und andere Unix Varianten (basiert auf …   Deutsch Wikipedia

  • selenium — SELÉNIUM s.n. v. seleniu. Trimis de LauraGellner, 13.09.2007. Sursa: DEX 98  SELÉNIUM s.n. v. seleniu. Trimis de LauraGellner, 13.09.2007. Sursa: DN …   Dicționar Român

  • Selenium — Se*le ni*um, n. [NL., from Gr. selh nh the moon. So called because of its chemical analogy to tellurium (from L. tellus the earth), being, as it were, a companion to it.] (Chem.) A nonmetallic element of the sulphur group of atomic number 34,… …   The Collaborative International Dictionary of English

  • Selenĭum — (Chem.), so v.w. Selen …   Pierer's Universal-Lexikon

  • selenium — Symbol: Se Atomic number: 34 Atomic weight: 78.96 Metalloid element, belongs to group 16 of the periodic table. Multiple allotropic forms exist. Chemically resembles sulphur. Discovered in 1817 by Jons J. Berzelius …   Elements of periodic system

  • selenium — (n.) element name, Modern Latin, from Gk. selene moon (see SELENE (Cf. Selene)). Named by Berzelius (1818), on analogy of TELLURIUM (Cf. tellurium), with which it had been at first confused, and which was named for the earth. Despite the ium… …   Etymology dictionary

  • selenium — [sə lē′nē əm] n. [ModL: so named (1818) by BERZELIUS Baron Jöns Jakob < Gr selēnē, the moon (see SELENE) + IUM, by analogy with TELLURIUM, with which it was assoc. in the ore] a nonmetallic chemical element with several allotropic forms, used… …   English World dictionary

  • Sélénium — Pour les articles homonymes, voir Selenium. Sélénium Arsenic ← Sélénium → …   Wikipédia en Français

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