alumina

alumina
noun Etymology: New Latin, from Latin alumin-, alumen alum Date: 1801 the oxide of aluminum Al2O3 occurring native as corundum and in hydrated forms (as in bauxite)

New Collegiate Dictionary. 2001.

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  • alumină — ALUMÍNĂ s.f. 1. Oxid de aluminiu. 2. (În forma alumin) Varietate de caolin, folosită în industria cauciucului. [var.: alumín s.n.] – Din fr. alumine. Trimis de ana zecheru, 13.09.2007. Sursa: DEX 98  ALUMÍNĂ s. v. oxid de aluminiu. Trimis de… …   Dicționar Român

  • Alumina — Logo de Alumina Création 2003 …   Wikipédia en Français

  • Alumina — bezeichnet: Königlich Kopenhagen, Manufaktur der Königlichen Porzellanfabrik in Dänemark Alumina Limited, australisches Unternehmen der Aluminiumproduktion Transparente Form von Aluminiumoxid, einer Oxidkeramik …   Deutsch Wikipedia

  • alumina — s. f. Óxido de alumínio (Al2O3) que diversamente colorido constitui algumas pedras preciosas (safiras, rubis, etc.), e que é empregado no fabrico de porcelanas e faianças. (A alumina hidratada existe na natureza [bauxita].) …   Dicionário da Língua Portuguesa

  • Alumina — A*lu mi*na, n. [L. alumen, aluminis. See {Alum}.] (Chem.) One of the earths, consisting of two parts of aluminium and three of oxygen, {Al2O3}. [1913 Webster] Note: It is the oxide of the metal aluminium, the base of aluminous salts, a… …   The Collaborative International Dictionary of English

  • Alumīna — (Chem.), Thonerde …   Pierer's Universal-Lexikon

  • Alumĭna — (lat.), Tonerde; A. hydrata, Tonerdehydrat …   Meyers Großes Konversations-Lexikon

  • alúmina — (no contable) sustantivo femenino 1. Área: química Óxido de aluminio que, forma feldespatos o arcillas, combinado con ciertos óxidos, y, cristalizado, el rubí o el corindón …   Diccionario Salamanca de la Lengua Española

  • alúmina — (Del lat. alūmen, ĭnis, alumbre). f. Quím. Óxido de aluminio que se halla en la naturaleza algunas veces puro y cristalizado, y por lo común formando, en combinación con la sílice y otros cuerpos, los feldespatos y las arcillas …   Diccionario de la lengua española

  • alumina — [ə lo͞o′mə nə] n. [ModL < L alumen (gen. aluminis), ALUM1] an oxide of aluminum, Al2O3, present in bauxite and clay and found as different forms of corundum, including emery, sapphires, and rubies …   English World dictionary

  • alumina — /euh looh meuh neuh/, n. the natural or synthetic oxide of aluminum, Al2O3, occurring in nature in a pure crystal form as corundum. Also called aluminum oxide. [1780 90; < L alumin , s. of alumen ALUM1 + A4] * * * ▪ chemical compound… …   Universalium

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