[ kwawrt-sahyt ]
/ ˈkwɔrt saɪt /


a granular metamorphic rock consisting essentially of quartz in interlocking grains.

Origin of quartzite

First recorded in 1840–50; quartz + -ite1
Related formsquartz·it·ic [kwawrt-sit-ik] /kwɔrtˈsɪt ɪk/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for quartzite

British Dictionary definitions for quartzite


/ (ˈkwɔːtsaɪt) /


a very hard metamorphic rock consisting of a mosaic of intergrown quartz crystals
a white or grey sandstone composed of quartz
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for quartzite



1837, from quartz + -ite.

Online Etymology Dictionary, © 2010 Douglas Harper

Science definitions for quartzite


[ kwôrtsīt′ ]

A metamorphic rock consisting entirely of quartz. Quartzite forms when sandstone or chert are heated during metamorphism.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.