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Related to breccia: Volcanic breccia
brec·ci·a(brĕch′ē-ə, brĕch′ə, brĕsh′-)
Rock composed of sharp-angled fragments embedded in a fine-grained matrix.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Geological Science) a rock consisting of angular fragments embedded in a finer matrix, formed by erosion, impact, volcanic activity, etc
[C18: from Italian, from Old High German brecha a fragment; see breach]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
brec•ci•a(ˈbrɛtʃ i ə, ˈbrɛʃ-)
rock composed of angular fragments of older rocks melded together.
[1765–75; < Italian < Germanic]
brec′ci•ate`, v.t. -at•ed, -at•ing.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
A sedimentary rock made of sharp-edged fragments naturally cemented together.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited