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[in-ter-tahyd-l] /ˌɪn tərˈtaɪd l/
of or relating to the littoral region that is above the low-water mark and below the high-water mark.
Origin of intertidal
1880-85; inter- + tidal Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for intertidal
  • Mangroves are habitats of enclosed intertidal mud flats with wave action greatly reduced, located near sources of fresh water.
  • Two of the main natural attractions of the island are its mangroves intertidal area walks.
  • The inside of a body, however, poses many of the same challenges as an intertidal zone.
  • Introduced rats indirectly change marine rocky intertidal communities from algae- to invertebrate-dominated.
  • Mangroves are tropical, intertidal forests composed of salt-tolerant trees and plants.
  • Winds and tides together have produced the huge, sandy intertidal zone across which you are trudging.
  • Shoreline intertidal communities span the area between the mean high water line and lowest spring tide level.
  • Human disturbance and long-term changes on a rocky intertidal community.
  • Construction of bulkheads and other shoreline armoring can bury the upper intertidal zone.
British Dictionary definitions for intertidal


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

1883, from inter- + tidal.

Online Etymology Dictionary, © 2010 Douglas Harper
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intertidal in Science
Relating to the region between the high tide mark and the low tide mark.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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