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
On top of those conditions, the pool was refilled with water from the nutrient-rich tidal basin of the Potomac River.
—
Eric Palkovacs,
The Conversation,
25 June 2026
The researchers revisited the problem using more sophisticated tidal models developed over the last fifteen years.
—
Rupendra Brahambhatt,
Interesting Engineering,
20 June 2026
With seven miles of shoreline, the 892-acre park has plenty of space to explore tidal wetlands interspersed with farmland and upland forests.
—
Simon Davidson,
Travel + Leisure,
19 June 2026
Earth’s oceanic tidal bulge is not directly in line with the Moon and is slightly ahead of the Moon.
—
Encyclopedia Britannica,
18 June 2026
See All Example Sentences for tidal
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Eric Palkovacs,
The Conversation,
25 June 2026
The researchers revisited the problem using more sophisticated tidal models developed over the last fifteen years.
—
Rupendra Brahambhatt,
Interesting Engineering,
20 June 2026
With seven miles of shoreline, the 892-acre park has plenty of space to explore tidal wetlands interspersed with farmland and upland forests.
—
Simon Davidson,
Travel + Leisure,
19 June 2026
Earth’s oceanic tidal bulge is not directly in line with the Moon and is slightly ahead of the Moon.
—
Encyclopedia Britannica,
18 June 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 3 Jul. 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
