tidal

[ tahyd-l ]
/ ˈtaɪd l /

adjective

of, pertaining to, characterized by, or subject to tides: a tidal current.
dependent on the state of the tide as to time of departure: a tidal steamer.

Origin of tidal

First recorded in 1800–10; tide1 + -al1
Related formstid·al·ly, adverbnon·tid·al, adjectiveun·tid·al, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for tidally

tidal

/ (ˈtaɪdəl) /

adjective

relating to, characterized by, or affected by tidesa tidal estuary
dependent on the state of the tidea tidal ferry
(of a glacier) reaching the sea and discharging floes or icebergs
Derived Formstidally, adverb
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 tidally

tidal


adj.

1807, a hybrid formation from tide (n.) + Latin-derived suffix -al (1). A tidal wave (1830) is properly high water caused by movements of the tides; erroneous use for "tsunami, great ocean wave caused by an earthquake, etc." is recorded from 1878.

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for tidally

tidal

[ tīdl ]

adj.

Resembling the tides; alternately rising and falling.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.