[ 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

First recorded in 1880–85; inter- + tidal Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for intertidal

British Dictionary definitions for intertidal

/ (ˌɪntəˈtaɪdəl) /


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

Scientific definitions for intertidal

[ ĭn′tər-tīdl ]

Relating to the region between the high tide mark and the low tide mark.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.