claystone
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clay·stone
(klā′stōn′)n.
A fine-grained, dark gray to pink sedimentary rock consisting primarily of compacted and hardened clay.
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.
claystone
(ˈkleɪˌstəʊn)n
(Geological Science) a compact very fine-grained rock consisting of consolidated clay particles
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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Noun | 1. | claystone - fine-grained rock consisting of compacted clay particles |
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