tsunami
noun
tsu·na·mi
(t)su̇-ˈnä-mē 
plural tsunamis also tsunami
: a great sea wave produced especially by submarine earth movement or volcanic eruption : tidal wave
Examples of tsunami in a Sentence
Recent Examples on the Web
California reported its first tsunami waves just after 1 a.m. PT (4 a.m. ET).
—
Chad De Guzman, Time, 31 July 2025
That earthquake churned up a massive tsunami, which slammed into the Kuril Islands in a series of three waves.
—Kiona N. Smith, Forbes.com, 30 July 2025
According to the National Oceanic and Atmospheric Administration, tsunami waves began reaching Hawaii’s coast in the early evening local time.
—Jade Walker, CNN Money, 30 July 2025
Guam was placed under tsunami warning, which has been canceled as well, according to NWS Guam.
—Madison E. Goldberg, People.com, 30 July 2025
See All Example Sentences for tsunami
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Chad De Guzman, Time, 31 July 2025
That earthquake churned up a massive tsunami, which slammed into the Kuril Islands in a series of three waves.
—Kiona N. Smith, Forbes.com, 30 July 2025
According to the National Oceanic and Atmospheric Administration, tsunami waves began reaching Hawaii’s coast in the early evening local time.
—Jade Walker, CNN Money, 30 July 2025
Guam was placed under tsunami warning, which has been canceled as well, according to NWS Guam.
—Madison E. Goldberg, People.com, 30 July 2025
See All Example Sentences for tsunami
Cite this Entry
“Tsunami.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tsunami. Accessed 2 Aug. 2025.
Copy CitationKids Definition
tsunami
noun
tsu·na·mi
(t)su̇-ˈnäm-ē
: a great sea wave produced especially by an earthquake or volcanic eruption under the sea : tidal wave
Etymology
Japanese, from tsu "harbor" + nami "wave"
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