1
a
: of, relating to, caused by, or having tides
tidal cycles
tidal erosion
b
: periodically rising and falling or flowing and ebbing
tidal waters
2
: dependent (as to the time of arrival or departure) upon the state of the tide
a tidal steamer
Examples of tidal in a Sentence
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At the Fundy Discovery Site, tourists can witness a tidal bore, or a wave that moves upstream in a river.
—
Melanie Stetson Freeman, The Christian Science Monitor, 28 Feb. 2025
Large lifts continued the operation through Tuesday evening, with unloading expected for Wednesday morning, depending on environmental and tidal conditions, authorities said.
—Muri Assunção, New York Daily News, 4 Feb. 2025
Officials said their work might depend upon the wind and tidal conditions in the river, where the aircraft crashed last Wednesday night after colliding as the plane was about to land at nearby Ronald Reagan National Airport.
—Serkan Gurbuz, Chicago Tribune, 4 Feb. 2025
When a star ventures too close to a supermassive black hole, the tremendous gravitational influence of that cosmic titan generates tidal forces that squash the star horizontally while stretching it vertically.
—Robert Lea, Space.com, 19 Feb. 2025
See All Example Sentences for tidal
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Melanie Stetson Freeman, The Christian Science Monitor, 28 Feb. 2025
Large lifts continued the operation through Tuesday evening, with unloading expected for Wednesday morning, depending on environmental and tidal conditions, authorities said.
—Muri Assunção, New York Daily News, 4 Feb. 2025
Officials said their work might depend upon the wind and tidal conditions in the river, where the aircraft crashed last Wednesday night after colliding as the plane was about to land at nearby Ronald Reagan National Airport.
—Serkan Gurbuz, Chicago Tribune, 4 Feb. 2025
When a star ventures too close to a supermassive black hole, the tremendous gravitational influence of that cosmic titan generates tidal forces that squash the star horizontally while stretching it vertically.
—Robert Lea, Space.com, 19 Feb. 2025
See All Example Sentences for tidal
Cite this Entry
“Tidal.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tidal. Accessed 12 Mar. 2025.
Copy CitationKids Definition
tidal
adjective
tid·al
ˈtīd-ᵊl 
: of or relating to tides : rising and falling or flowing and ebbing at regular times
Medical Definition
tidal
adjective
tid·al
ˈtīd-ᵊl
: of, relating to, or constituting tidal air
interference with the normal tidal exchange of the lungs—F. R. Mautz & R. M. Hosler
F. R. Mautz & R. M. HoslerLove words? Need even more definitions?
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