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
Areas used for aquaculture have since suffered chronic tidal flooding, leading to oversalinization, and land has been lost, the study said.
—
Rong-Gong Lin Ii, Los Angeles Times, 30 Apr. 2025
Gravitational tidal effects from the mass of neighboring star-forming regions could also have given Ophion's stars an extra push.
—Keith Cooper, Space.com, 30 Apr. 2025
And, scientists now wonder, how does tidal heating even work?
—Robin George Andrews, Quanta Magazine, 25 Apr. 2025
That program including opening the mouth to the ocean, restoring tidal wetlands, creating new endangered bird breeding habitat and preserving the surrounding coastal sage scrub habitat vital for endangered songbirds, such as the Belding’s savannah sparrow.
—Jeff Regan, San Diego Union-Tribune, 24 Apr. 2025
See All Example Sentences for tidal
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Rong-Gong Lin Ii, Los Angeles Times, 30 Apr. 2025
Gravitational tidal effects from the mass of neighboring star-forming regions could also have given Ophion's stars an extra push.
—Keith Cooper, Space.com, 30 Apr. 2025
And, scientists now wonder, how does tidal heating even work?
—Robin George Andrews, Quanta Magazine, 25 Apr. 2025
That program including opening the mouth to the ocean, restoring tidal wetlands, creating new endangered bird breeding habitat and preserving the surrounding coastal sage scrub habitat vital for endangered songbirds, such as the Belding’s savannah sparrow.
—Jeff Regan, San Diego Union-Tribune, 24 Apr. 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 May. 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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