Al2O3
Sapphire Sap"phire (? or ?; 277), n. [OE. saphir, F. saphir, L. sapphirus, Gr. ?, of Oriental origin; cf. Heb. sapp[=i]r.] 1. (Min.) Native alumina or aluminium sesquioxide, {Al2O3}; corundum; esp., the blue transparent variety of corundum, highly prized as a gem. [1913 Webster]

Of rubies, sapphires, and of pearl['e]s white. --Chaucer. [1913 Webster]

Note: Sapphire occurs in hexagonal crystals and also in granular and massive forms. The name sapphire is usually restricted to the blue crystals, while the bright red crystals are called Oriental rubies (see under {Ruby}), the amethystine variety Oriental amethyst (see under {Amethyst}), and the dull massive varieties corundum (a name which is also used as a general term to include all varieties). See {Corundum}. [1913 Webster]

2. The color of the gem; bright blue. [1913 Webster]

3. (Zo["o]l.) Any humming bird of the genus {Hylocharis}, native of South America. The throat and breast are usually bright blue. [1913 Webster]

{Star sapphire}, or {Asteriated sapphire} (Min.), a kind of sapphire which exhibits asterism. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • Al2O3 — Kristallstruktur Allgemeines Name Aluminiumoxid Andere Namen Korund (Mineral) Tonerde …   Deutsch Wikipedia

  • Al2O3 — Sesquioxide Ses qui*ox ide, n. [Sesqui + oxide.] (Chem.) An oxide containing three atoms of oxygen with two atoms (or radicals) of some other substance; thus, alumina, {Al2O3} is a sesquioxide. [1913 Webster] …   The Collaborative International Dictionary of English

  • Al2O3 — 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

  • Al2O3 — Corundum Co*run dum (k[ o]*r[u^]n d[u^]m), n.; pl. {Corundums} (k[ o]*r[u^]n d[u^]mz). [Also corindon.] [From Hind. kurand corundum stone.] (Min.) The mineral alumina ({Al2O3}), as found native in a crystalline state. Transparent varieties are… …   The Collaborative International Dictionary of English

  • Al2O3 — Cette page répertorie différents polymorphes, solides qui possèdent la même composition chimique mais une structure cristalline différente.   Al2O3 est la formule chimique de : Alumine, Bauxite, Corindon (αAl2O3), Rubis, Saphir …   Wikipédia en Français

  • Al2O3 — …   Википедия

  • AL2O3 — Aluminum Oxide (aka Alumina or Sapphire) (Academic & Science » Electronics) …   Abbreviations dictionary

  • Al2O3 — • aluminum oxide (alumina) …   Maritime acronyms and abbreviations

  • Зависимость краевого угла смачивания поверхности графита для систем NaF - AlF3 и Na3AlF6 - Al2O3 от криолитового отношения и концентрации глинозема при 1050 °С (атмосфера - аргон) — Система NaF AlF3 (время выдержки 1 мин) КО 18,01 5,76 4,68 3,00 2,82 2,61 …   Химический справочник

  • Точки нонвариантных равновесий системы Na3AlF6 - AlF3 - Al2O3 — Точка Температура кристаллизации, °С Состав, % (мол.) Состав, % (масс.) Na3AlF6 AlF3 Al2O3 …   Химический справочник

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