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[ig-nim-brahyt] /ˈɪg nɪmˌbraɪt/
noun, Petrology
a fine-grained volcanic rock consisting mainly of welded shards of feldspar and quartz.
Also called welded tuff.
Origin of ignimbrite
1932; < Latin ign(is) fire + imbr-, stem of imber rain, shower + -ite1 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for ignimbrite


a rock formed by the deposition at high temperature and the consolidation of a nuée ardente or other type of ash flow, being a complicated mixture of volcanic materials welded together by heat, hot gases, and pressure Also called welded tuft See tuft
Word Origin
C20: from Latin ign(is) fire + imbr(is), imber shower of rain + -ite1
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
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ignimbrite in Science
A volcanic rock formed by the consolidation of volcanic ash and other material ejected by an explosive volcanic eruption.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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