Spinel Spi*nel", Spinelle Spi*nelle", n. [F. spinelle, or LL. spinellus, perhaps from L. spina a thorn, a prickle, in allusion to its pointed crystals.] (Min.) A mineral occuring in octahedrons of great hardness and various colors, as red, green, blue, brown, and black, the red variety being the gem spinel ruby. It consist essentially of alumina and magnesia, but commonly contains iron and sometimes also chromium. [1913 Webster]

Note: The spinel group includes spinel proper, also magnetite, chromite, franklinite, gahnite, etc., all of which may be regarded as composed of a sesquioxide and a protoxide in equal proportions. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • Spinel — General Category Oxide minerals Spinel group Chemical formula MgAl2O4 …   Wikipedia

  • spinel — SPINÉL, spineli, s.m. Minereu de magneziu cristalizat în sistemul cubic, divers colorat, cu luciu sticlos şi duritate mare, cu varietăţi folosite ca pietre preţioase. – Din fr. spinelle. Trimis de RACAI, 07.12.2003. Sursa: DEX 98  spinél s. m.,… …   Dicționar Român

  • Spinel — Spin el, n. Bleached yarn in making the linen tape called inkle; unwrought inkle. Knight. [1913 Webster] …   The Collaborative International Dictionary of English

  • spinel — spìnel m DEFINICIJA min. magnezijev aluminat MgAl2O4, tipičan za kontaktnu metamorfozu; kada je u boji, smatra se dragim kamenom ETIMOLOGIJA fr. spinelle ← tal. spinella ≃ spina: trn ← lat …   Hrvatski jezični portal

  • spinel — [spi nel′, spin′əl] n. [Early ModE spynel < MFr spinelle < It spinella, dim. of spina, thorn, spine < L: see SPINE] a variously colored, crystalline mineral, MgAlO4, used as a gem; magnesium aluminum oxide …   English World dictionary

  • spinel — /spi nel , spin l/, n. 1. any of a group of minerals composed principally of oxides of magnesium, aluminum, iron, manganese, chromium, etc., characterized by their hardness and octahedral crystals. 2. a mineral of this group, essentially… …   Universalium

  • spinel — n. 1 any of a group of hard crystalline minerals of various colours, consisting chiefly of oxides of magnesium and aluminium. 2 any substance of similar composition or properties. Phrases and idioms: spinel ruby a deep red variety of spinel used… …   Useful english dictionary

  • spinél — tudi špinél a m (ẹ̑) min. poldrag kamen rdeče, modre, zelene barve: prstan s spinelom …   Slovar slovenskega knjižnega jezika

  • špinel — gl. spinel …   Slovar slovenskega knjižnega jezika

  • spinel — špinelis statusas T sritis fizika atitikmenys: angl. spinel vok. Spinell, m rus. шпинель, m pranc. spinelle, f …   Fizikos terminų žodynas

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