Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Relating to or affected by tides: the tidal maximum; tidal pools; tidal waters.
  • adj. Dependent on or scheduled by the time of high tide: a tidal ferry.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. relating to tides

from the GNU version of the Collaborative International Dictionary of English

  • adj. Of or pertaining to tides; caused by tides; having tides; periodically rising and falling, or following and ebbing.

from The Century Dictionary and Cyclopedia

  • Of or pertaining to a tide or the tides; subject to or characterized by a periodical rise and fall or ebb and flow: as, a tidal river; tidal waters; a tidal basin.
  • Dependent on the tides: as, a tidal steamer (that is, a steamer the hour of whose departure is regulated by the state of the tide); tidal trains (that is, trains that run in connection with tidal steamers).
  • Figuratively, a wide-spread or general manifestation of strong feeling or sentiment: as, a tidal wave of popular indignation.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. of or relating to or caused by tides

Etymologies

From tide +‎ -al (Wiktionary)

Examples

  • A sea-bred boy would not have stayed a day on Earraid, which is only what they call a tidal islet, and, except, in the bottom of the neaps, can be entered and left twice in every twenty-four hours, either dry-shod, or, at the most, by wading.

    The Ontario High School Reader

  • A sea-bred boy would not have stayed a day on Earraid; which is only what they call a tidal islet; and except in the bottom of the neaps, can be entered and left twice in every twenty-four hours, either dry-shod, or at the most by wading.

    Journeys Through Bookland, Vol. 6

  • A sea-bred boy would not have stayed a day on Earraid; which is only what they call a tidal islet, and except in the bottom of the neaps, can be entered and left twice in every twenty-four hours, either dry-shod, or at the most by wading.

    Kidnapped: The Adventures of David Balfour

  • Rep. Paul Ryan, standing, briefs fellow House Republicans on what he calls the "tidal wave" of debt the country faces.

    CNN.com

  • Tidal heating can too, for what they call "tidal Venuses."

    Yahoo! News: Business - Opinion

  • WASHINGTON (AFP) - The White House stepped up attacks Sunday on what it described as a tidal wave of secret outside money pouring into Republican campaign ads ahead of November 2

    Yahoo! News: Business - Opinion

  • This project has the potential to travel to destinations that are further removed from the sea to inspire and kindle the imagination, and bring the sea to people who might not have ever experienced the marvel of exploring the thriving biodiversity found in tidal waters.

    Tide Pool Project: Call for Entries

  • But as long as they are caught in tidal waters, no license is required.

    Should MA Make Striped Bass A Protected Game Fish?

  • They come in tidal waves, one or two at a time, completely submerging my every day life until I break down and write something.

    “You see, a novel is like a sandwich… wait, no, that’s not right…” «

  • And unlike most of their East Coast counterparts -- who commonly dredge submerged shellfish beds from boats -- Puget Sound oyster growers typically seed beds in tidal shelves right off the beaches, and walk out to tend them and harvest when the tide is down.

    The American Oyster Paradise

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  • It sounds as though it might also be used as a singular noun. 'That river is tidal for many miles.'

    October 31, 2011