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
Recent Examples on the Web
Given Segue 1's proximity to the Milky Way, the researchers suggest that the dwarf galaxy may have once been larger, but lost most of its stars over time to the Milky Way’s tidal forces.
—
Samantha Mathewson, Space.com, 29 Oct. 2025
In the midst of the storm was a full moon which created a tidal surge that largely destroyed the camp.
—Literary Hub, 28 Oct. 2025
The war has forced a tidal shift within the Democratic base, as voters’ support for Israel’s military campaign tanked over the past two years.
—Calmatters, Mercury News, 14 Oct. 2025
In west Carteret and coastal Onslow counties, the NWS warned of up to 2 feet of inundations above ground level in low-lying areas near shorelines and tidal waterways that could result in property damage.
—Joe Edwards, MSNBC Newsweek, 13 Oct. 2025
See All Example Sentences for tidal
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Samantha Mathewson, Space.com, 29 Oct. 2025
In the midst of the storm was a full moon which created a tidal surge that largely destroyed the camp.
—Literary Hub, 28 Oct. 2025
The war has forced a tidal shift within the Democratic base, as voters’ support for Israel’s military campaign tanked over the past two years.
—Calmatters, Mercury News, 14 Oct. 2025
In west Carteret and coastal Onslow counties, the NWS warned of up to 2 feet of inundations above ground level in low-lying areas near shorelines and tidal waterways that could result in property damage.
—Joe Edwards, MSNBC Newsweek, 13 Oct. 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 3 Nov. 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?
Merriam-Webster unabridged
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