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Dictionary.com Unabridged (v 1.1) - Cite This Source - Share This
quartz    Audio Help   [kwawrts] Pronunciation Key
–noun
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, jasper, etc.) or in crystals (as rock crystal, amethyst, citrine, etc.): the chief constituent of sand and sandstone, and an important constituent of many other rocks. It is piezoelectric and used to control the frequencies of radio transmitters.

[Origin: 1750–60; < G Quarz]

quartz·ose    Audio Help   [kwawrt-sohs] Pronunciation Key, quartz·ous    Audio Help   [kwawrt-suhs] Pronunciation Key, adjective
Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.
Considering Granite?
Consider 3 Good Reasons Not To! Quartz Surfaces Outperform Granite
www.CambriaUSA.com

Sponsored Links
On Display Minerals
Exquisite, affordable crystal displays for your home or office.
www.ondisplayminerals.com
Various Quality Quartz
quartzleading manufacturer Top quality and competitive price!
www.cn-quartz.com
Encyclopædia Britannica, Inc.
quartz

To learn more about quartz visit Britannica.com

© 2008 Encyclopædia Britannica, Inc.
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American Heritage Dictionary - Cite This Source - Share This
quartz    Audio Help   (kwôrts)  Pronunciation Key 
n.   A very hard mineral composed of silica, SiO2, found worldwide in many different types of rocks, including sandstone and granite. Varieties of quartz include agate, chalcedony, chert, flint, opal, and rock crystal.


[German Quarz, from Middle High German quarc, of Slavic origin.]

quartz'ose' (kwôrt'sōs') adj.
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The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2006 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Online Etymology Dictionary - Cite This Source - Share This
quartz 
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."

Online Etymology Dictionary, © 2001 Douglas Harper
WordNet - Cite This Source - Share This
quartz

noun
1. colorless glass made of almost pure silica [syn: quartz glass
2. a hard glossy mineral consisting of silicon dioxide in crystal form; present in most rocks (especially sandstone and granite); yellow sand is quartz with iron oxide impurities 

WordNet® 3.0, © 2006 by Princeton University.
Kernerman English Multilingual Dictionary - Cite This Source - Share This
quartz [kwoːts] noun, adjective
(of) a kind of hard substance found in rocks, often in the form of crystals
Arabic: كوارْتز: صُوّان شَفّاف مُتَبَلْوِر
Chinese (Simplified): 石英[的]
Chinese (Traditional): 石英[的]
Czech: křemen(ný)
Danish: kvarts; kvarts-
Dutch: kwarts
Estonian: kvarts
Finnish: kvartsi
French: (de, en) quartz
German: Quarz; Quarz-…
Greek: χαλαζίας
Hungarian: kvarc
Icelandic: kvars
Indonesian: kuarsa
Italian: quarzo; di quarzo*
Japanese: 石英(の)
Latvian: kvarcs
Lithuanian: kvarcas
Norwegian: kvarts
Polish: kwarc
Portuguese (Brazil): quartzo
Portuguese (Portugal): quartzo
Romanian: (de, *din) cuarţ
Russian: кварц
Slovak: kremeň; kremeňový
Slovenian: kremenjak
Spanish: cuarzo
Swedish: kvarts
Turkish: kuvars
Kernerman English Multilingual Dictionary, © 2000-2006 K Dictionaries Ltd.
The American Heritage Science Dictionary - Cite This Source - Share This
quartz    Audio Help   (kwôrts)  Pronunciation Key 
A hard, transparent trigonal mineral that, after feldspar, is the most common mineral on the surface of the Earth. It occurs as a component of igneous, metamorphic, and sedimentary rocks as well as in a variety of other forms such as rock crystal, flint, and agate. Some crystalline forms, such as amethyst, are considered gemstones. Chemical formula: SiO2.

The American Heritage® Science Dictionary
Copyright © 2002 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
U.S. Gazetteer - Cite This Source - Share This

Quartz Hill, CA (CDP, FIPS 59052) Location: 34.65222 N, 118.21490 W
Population (1990): 9626 (3465 housing units)
Area: 10.1 sq km (land), 0.0 sq km (water)
Zip code(s): 93536

U.S. Gazetteer, U.S. Census Bureau
Webster's Revised Unabridged Dictionary - Cite This Source - Share This

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 cryptocrystalline massive forms varying in color and degree of transparency, being sometimes opaque.

Note: The crystalline varieties include: amethyst, violet; citrine and false topaz, pale yellow; rock crystal, transparent and colorless or nearly so; rose quartz, rosecolored; smoky quartz, smoky brown. The chief crypto-crystalline varieties are: agate, a chalcedony in layers or clouded with different colors, including the onyx and sardonyx; carnelian and sard, red or flesh-colored chalcedony; chalcedony, nearly white, and waxy in luster; chrysoprase, an apple-green chalcedony; flint, hornstone, basanite, or touchstone, brown to black in color and compact in texture; heliotrope, green dotted with red; jasper, opaque, red yellow, or brown, colored by iron or ferruginous clay; prase, translucent and dull leek-green. Quartz is an essential constituent of granite, and abounds in rocks of all ages. It forms the rocks quartzite (quartz rock) and sandstone, and makes most of the sand of the seashore.
Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.
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