QUARTZ
. s. m.
(On prononce Couartz. ) T. de Minéralogie. Mot emprunté de l'allemand. Substance minérale de la classe des pierres, assez dure pour rayer le verre, auquel elle ressemble beaucoup. Le quartz, réduit en poudre, est la base du verre.

L'Academie francaise. 1835.

Regardez d'autres dictionnaires:

  • 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

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  • 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 — This article is about the mineral. For other uses, see Quartz (disambiguation). Quartz Quartz crystal cluster from Tibet General Category …   Wikipedia

  • quartz — quartzose /kwawrt sohs/, quartzous /kwawrt seuhs/, adj. /kwawrts/, n. one of the commonest minerals, silicon dioxide, SiO2, having many varieties that differ in color, luster, etc., and occurring either in masses (as agate, bloodstone, chalcedony …   Universalium

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