• synonyms


[noun out-krop; verb out-krop]
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  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.
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verb (used without object), out·cropped, out·crop·ping.
  1. to crop out, as strata.
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Origin of outcrop

First recorded in 1760–70; noun use of verb phrase crop out
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for outcrop

offshoot, node, shoot, bulge, prolongation, process, swelling, protuberance, prominence, enlargement, excrescence, jut, sprout, outcrop

Examples from the Web for outcrop

Historical Examples of outcrop

  • In my belief, simply an outcrop of sincerity—of fidelity to mood, to impression, to self.

    Another Sheaf

    John Galsworthy

  • Somewhere in here began an outcrop of rock running east for miles.

    The Flaming Jewel

    Robert W. Chambers

  • The shelf which had caught him was the broader part of a long edge of outcrop.

    Otherwise Phyllis

    Meredith Nicholson

  • At this point an effort would be made against the outcrop of his thoughts.

    Somehow Good

    William de Morgan

  • The frequent recurrence of outcrop and angle made this comparatively easy.

    On the Frontier

    Bret Harte

British Dictionary definitions for outcrop


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


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

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Online Etymology Dictionary, © 2010 Douglas Harper

outcrop in Science


  1. An area of visible bedrock that is not covered with soil.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.