quartz
21quartz — n. a mineral form of silica that crystallizes as hexagonal prisms. Phrases and idioms: quartz clock a clock operated by vibrations of an electrically driven quartz crystal. quartz lamp a quartz tube containing mercury vapour and used as a light… …
22quartz — (Roget s IV) n. Types of quartz include: amethyst, false topaz, rock crystal, rose quartz, smoky quartz, bloodstone, agate, onyx, sardonyx, carnelian, chrysoprase, citrine, chalcedony, prase, flint, jasper; see also rock 1 …
23quartz — noun Etymology: German Quarz Date: circa 1631 1. a mineral consisting of silicon dioxide occurring in colorless and transparent or colored hexagonal crystals or in crystalline masses 2. a quartz crystal that when placed in an electric field… …
24quartz — [[t]kwɔ͟ː(r)ts[/t]] N UNCOUNT: oft N n Quartz is a mineral in the form of a hard, shiny crystal. It is used in making electronic equipment and very accurate watches and clocks. ...a quartz crystal …
25quartz — [[t]kwɔrts[/t]] n. mir the commonest mineral, silicon dioxide, SiO2, occurring in crystals, grains, and cryptocrystalline masses: the chief component of sand • Etymology: 1750–60; < G Quarz quartz•ose ˈkwɔrt soʊs quartz′ous səsadj …
26quartz — kvarcas statusas T sritis automatika atitikmenys: angl. quartz vok. Quarz, m rus. кварц, m pranc. quartz, m …
27quartz — kvarcas statusas T sritis fizika atitikmenys: angl. quartz vok. Quarz, m rus. кварц, m pranc. quartz, m …
28quartz — Crystalline silica, SiO2, occurring either in prisms capped by rhombohedra (low temperature quartz, stable up to 573°C) or in hexagonal bipyramidal crystals (high temperature quartz, stable above 573°C). Widely distributed in rocks of all kinds;… …
29QUARTZ — 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 …
30QUARTZ — n. m. T. de Minéralogie Mot emprunté de l’allemand. Silice cristallisée. Le quartz réduit en poudre est utilisé dans la fabrication du verre …
