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Definition of Tsunami

Babylon English

Great Tsunami of December 26th 2004, devastating tsunami that occurred on December 26, 2004 which was triggered by an earthquake and caused about 225,000 casualties in 8 countries (Thailand, India, Indonesia, Malaysia, Maldives, Seychelles, Somalia and Sri Lanka) on 2 continents, 2004 Tsunami
(Japanese) great sea wave caused by an underwater earthquake or underwater volcanic eruption
Tsunami Definition from Language, Idioms & Slang Dictionaries & Glossaries
hEnglish - advanced version

n : a huge destructive wave (especially one caused by an earthquake) [syn: tidal wave]

WordNet 2.0

1. a huge destructive wave (especially one caused by an earthquake)
(synonym) tidal wave
(hypernym) wave, moving ridge
Tsunami Definition from Science & Technology Dictionaries & Glossaries
An ocean wave with a long period that is formed by an underwater earthquake or landslide, or volcanic eruption. It may travel unnoticed across the ocean for thousands of miles from its point of origin and builds up to great heights over shallower water. Also known as a seismic sea wave, and incorrectly, as a tidal wave.
Tsunami Definition from Encyclopedia Dictionaries & Glossaries
English Wikipedia - The Free Encyclopedia
A tsunami (plural: tsunamis or tsunami; from , lit. "harbor wave"; English pronunciation: ) , also known as a seismic sea wave, is a series of waves in a water body caused by the displacement of a large volume of water, generally in an ocean or a large lake.  Earthquakes, volcanic eruptions and other underwater explosions (including detonations of underwater nuclear devices), landslides, glacier calvings, meteorite impacts and other disturbances above or below water all have the potential to generate a tsunami. Unlike normal ocean waves which are generated by wind or tides which are generated by the gravitational pull of the Moon and Sun, a tsunami is generated by the displacement of water. Tsunami waves do not resemble normal sea waves, because their wavelength is far longer. Rather than appearing as a breaking wave, a tsunami may instead initially resemble a rapidly rising tide, and for this reason they are often referred to as tidal waves, although this usage is not favored by the scientific community because tsunamis are not tidal in nature. Tsunamis generally consist of a series of waves with periods ranging from minutes to hours, arriving in a so-called "wave train". Wave heights of tens of meters can be generated by large events. Although the impact of tsunamis is limited to coastal areas, their destructive power can be enormous and they can affect entire ocean basins; the 2004 Indian Ocean tsunami was among the deadliest natural disasters in human history with at least 230,000 people killed or missing in 14 countries bordering the Indian Ocean.

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Tsunami Definition from Society & Culture Dictionaries & Glossaries
Environmental Engineering (English ver.)
A huge sea wave caused by a great disturbance under an ocean, as a strong earthquake or volcanic eruption. Also see Tidal Wave.
Tsunami Definition from Entertainment & Music Dictionaries & Glossaries
English to Federation-Standard Golic Vulcan