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
Coastal erosion is driven largely by the immediate impact of storm waves and the gradual loss of sand through tidal movement.
—
Jeremy Sabol, Sun Sentinel, 6 Aug. 2025
But under the Trump Administration, there’s been a tidal shift.
—Jessica Mathews, Fortune, 6 Aug. 2025
For those who want to bring their furry friends along, head to Bonita Beach Dog Park, a dog-friendly, off-leash tidal flat where pups can roam freely and frolic in the shallow waters.
—Tara Massouleh McCay, Southern Living, 3 Aug. 2025
Other factors shaping this galactic egg could be the same ram pressure that formed the jellyfish galaxy discovered this year, which might play an even bigger role in shaping the galaxy than tidal interactions.
—Katie Liu, Discover Magazine, 31 July 2025
See All Example Sentences for tidal
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Jeremy Sabol, Sun Sentinel, 6 Aug. 2025
But under the Trump Administration, there’s been a tidal shift.
—Jessica Mathews, Fortune, 6 Aug. 2025
For those who want to bring their furry friends along, head to Bonita Beach Dog Park, a dog-friendly, off-leash tidal flat where pups can roam freely and frolic in the shallow waters.
—Tara Massouleh McCay, Southern Living, 3 Aug. 2025
Other factors shaping this galactic egg could be the same ram pressure that formed the jellyfish galaxy discovered this year, which might play an even bigger role in shaping the galaxy than tidal interactions.
—Katie Liu, Discover Magazine, 31 July 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 19 Aug. 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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