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 office lacked an end tidal CO2 detection device.
—
David J. Neal, Miami Herald, 10 Feb. 2026
Forecasters say the waves could cause minor tidal overflow during late morning high tide on Friday and early afternoon high tide on Saturday.
—Gary Robbins, San Diego Union-Tribune, 5 Feb. 2026
An article in The Conversation described how some dinosaurs walked on sandy, inter-tidal channel bars, while the feet of others sank into soft mud forming the bed of the channel.
—Maria Mocerino, Interesting Engineering, 1 Feb. 2026
Flooding will extend inland from the waterfront along tidal rivers and bays resulting in some road closures and flooding of vehicles.
—Nc Weather Bot, Charlotte Observer, 31 Jan. 2026
See All Example Sentences for tidal
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David J. Neal, Miami Herald, 10 Feb. 2026
Forecasters say the waves could cause minor tidal overflow during late morning high tide on Friday and early afternoon high tide on Saturday.
—Gary Robbins, San Diego Union-Tribune, 5 Feb. 2026
An article in The Conversation described how some dinosaurs walked on sandy, inter-tidal channel bars, while the feet of others sank into soft mud forming the bed of the channel.
—Maria Mocerino, Interesting Engineering, 1 Feb. 2026
Flooding will extend inland from the waterfront along tidal rivers and bays resulting in some road closures and flooding of vehicles.
—Nc Weather Bot, Charlotte Observer, 31 Jan. 2026
See All Example Sentences for tidal
Cite this Entry
“Tidal.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tidal. Accessed 14 Feb. 2026.
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
