Tsunami meaning

tso͝o-nämē
Frequency:
The definition of a tsunami is a large sea wave caused by an earthquake, landslide or other disturbance under the ocean.

A large and destructive wave created by an earthquake is an example of a tsunami.

noun
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A very large ocean wave that is caused by an underwater earthquake or volcanic eruption and often causes extreme destruction when it strikes land. Tsunamis can have heights of up to 30 m (98 ft) and reach speeds of 950 km (589 mi) per hour. They are characterized by long wavelengths of up to 200 km (124 mi) and long periods, usually between 10 and 60 minutes.
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A very large ocean wave caused by an underwater earthquake or volcanic eruption.
noun
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A huge sea wave caused by a great disturbance under an ocean, as a strong earthquake or volcanic eruption.
noun
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A very large and destructive wave, generally caused by a tremendous disturbance in the ocean, such as an undersea earthquake or volcanic eruption.
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Origin of tsunami

  • Japanese tsu harbor nami wave (so called because tsunamis generally pass unnoticed on the open sea, causing a slight swell, but rise to cause damage in the shallow waters of harbors)

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Japanese 津波 / 津浪 (つなみ (tsunami, “seismic sea wave", literally “harbour wave")).

    From Wiktionary