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intertidal

[in-ter-tahyd-l]
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adjective
  1. of or relating to the littoral region that is above the low-water mark and below the high-water mark.
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Origin of intertidal

First recorded in 1880–85; inter- + tidal
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for intertidal

intertidal

adjective
  1. of or relating to the zone of the shore between the high-water mark and low-water mark
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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 intertidal

adj.

1883, from inter- + tidal.

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Online Etymology Dictionary, © 2010 Douglas Harper

intertidal in Science

intertidal

[ĭn′tər-tīdl]
  1. Relating to the region between the high tide mark and the low tide mark.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.