quartz


quartz
A crystalline form of silicon dioxide used in chemical apparatus and in optical and electric instruments.

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quartz 'kwȯ(ə)rts n a mineral SiO2 consisting of a silica that occurs in colorless and transparent or colored hexagonal crystals and also in crystalline masses

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(kworts) a crystalline form of silica; workers inhaling excessive amounts of its dust may suffer from silicosis. Called also rock crystal.

Medical dictionary. 2011.

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  • quartz — [ kwarts ] n. m. • 1749; all. Quarz ♦ Forme cristalline commune de la silice (SiO2), appelée à l état pur cristal de roche; élément constitutif fréquent des roches cristallines (granites, rhyolithes, etc.), de certaines roches sédimentaires… …   Encyclopédie Universelle

  • Quartz 2D — est l interface de programmation principale pour le rendu bi dimensionnel de Mac OS X faisant partie du paquet Core Graphics. Sommaire 1 Détails 2 L affichage dans Quartz 2D 3 Histoire 4 …   Wikipédia en Français

  • Quartz — ist die Grafikschicht des Apple Betriebssystems Mac OS X. Bei Quartz handelt es sich um eine Bibliothek für 2D und 3D Grafiken, die das grundlegende Darstellungsmodell für Mac OS X bildet. Aufbauend auf dem plattformübergreifenden PDF Standard… …   Deutsch Wikipedia

  • Quartz — Quartz, n. [G. quarz.] (Min.) A form of silica, or silicon dioxide ({SiO2}), occurring in hexagonal crystals, which are commonly colorless and transparent, but sometimes also yellow, brown, purple, green, and of other colors; also in… …   The Collaborative International Dictionary of English

  • quartz — [kwo:ts US kwo:rts] n [U] [Date: 1700 1800; : German; Origin: quarz] a hard mineral substance that is used in making electronic watches and clocks ▪ quartz crystals ▪ a quartz watch …   Dictionary of contemporary English

  • Quartz — der; es, e <aus engl. quartz> engl. Schreibung von dt. Quarz (z. B. zur Kennzeichnung von quarzgesteuerten Uhren) …   Das große Fremdwörterbuch

  • quartz — (n.) 1756, from Ger. Quarz rock crystal, from M.H.G. twarc, probably from a W.Slavic source (Cf. Czech tvrdy, Polish twardy quartz ), from O.C.S. tvrudu hard …   Etymology dictionary

  • quartz — [kwôrts] n. [Ger quarz < ?] any of various crystallized forms of silica that are transparent, translucent, or colored, used in many ways, esp. as a gem or in making glass, lenses, or quartz crystals: see MOHS SCALE quartzose [kwôrts′ōs΄] adj …   English World dictionary

  • quartz — [ kwɔrts ] noun uncount a hard shiny stone often used inside electronic equipment and watches …   Usage of the words and phrases in modern English

  • quartz — ► NOUN ▪ a hard mineral consisting of silica, typically occurring as colourless or white hexagonal prisms. ORIGIN German Quarz, from Polish dialect kwardy, corresponding to Czech tvrdý hard …   English terms dictionary

  • quartz|it|ic — «kwawrt SIHT ihk», adjective. of the nature of or consisting of quartzite …   Useful english dictionary