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outcrop

[n. out-krop; v. out-krop] /n. ˈaʊtˌkrɒp; v. ˌaʊtˈkrɒp/
noun
1.
Geology.
  1. a cropping out, as of a stratum or vein at the surface of the earth.
  2. the exposed portion of such a stratum or vein.
2.
something that emerges suddenly or violently in the manner of an outcrop; outbreak:
an outcrop of student demonstrations.
verb (used without object), outcropped, outcropping.
3.
to crop out, as strata.
Origin
1760-1770
1760-70; noun use of verb phrase crop out
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for out-cropping

outcrop

noun (ˈaʊtˌkrɒp)
1.
part of a rock formation or mineral vein that appears at the surface of the earth
2.
an emergence; appearance
verb (intransitive) (ˌaʊtˈkrɒp) -crops, -cropping, -cropped
3.
(of rock strata, mineral veins, etc) to protrude through the surface of the earth
4.
another word for crop out
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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Word Origin and History for out-cropping

outcrop

n.

1805, in geology, "exposure of rocks at the surface," from out + crop (n.) in its sense of "sprout, head."

Online Etymology Dictionary, © 2010 Douglas Harper
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out-cropping in Science
outcrop
  (out'krŏp')   
An area of visible bedrock that is not covered with soil.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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