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
The publication studies sunspot cycles, solar activity, tidal forces, the position of the planets and the reversal of winds in the stratosphere over the equator.
—
Olivia Rose, AZCentral.com, 9 July 2025
Though its depiction in the film includes hefty CGI, the island is a real place: Lindisfarne, otherwise known as Holy Island, a tidal island off the coast of northern England connected to the mainland by a causeway that appears only at low tide.
—Nate Jones, Vulture, 3 July 2025
The Farmer's Almanac primarily uses a secretive formula that considers astronomical factors, like sunspot activity, moon phases, planetary positions and tidal forces, along with historical weather patterns.
—Chris McKeown, The Enquirer, 2 July 2025
Our own moon shows evidence of primeval tidal heating too.
—Robin Andrews, Wired News, 15 June 2025
See All Example Sentences for tidal
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Olivia Rose, AZCentral.com, 9 July 2025
Though its depiction in the film includes hefty CGI, the island is a real place: Lindisfarne, otherwise known as Holy Island, a tidal island off the coast of northern England connected to the mainland by a causeway that appears only at low tide.
—Nate Jones, Vulture, 3 July 2025
The Farmer's Almanac primarily uses a secretive formula that considers astronomical factors, like sunspot activity, moon phases, planetary positions and tidal forces, along with historical weather patterns.
—Chris McKeown, The Enquirer, 2 July 2025
Our own moon shows evidence of primeval tidal heating too.
—Robin Andrews, Wired News, 15 June 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 8 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?
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