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seismic sea wave

noun, Oceanography.


[tsoo-nah-mee] /tsʊˈnɑ mi/
an unusually large sea wave produced by a seaquake or undersea volcanic eruption.
Also called seismic sea wave.
Origin of tsunami
1905-10; < Japanese, equivalent to tsu harbor (earlier tu) + nami wave
Related forms
[tsoo-nah-mik, -nam-ik] /tsʊˈnɑ mɪk, -ˈnæm ɪk/ (Show IPA),
Can be confused Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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British Dictionary definitions for seismic-sea-wave


noun (pl) -mis, -mi
a large, often destructive, sea wave produced by a submarine earthquake, subsidence, or volcanic eruption. Sometimes incorrectly called a tidal wave
a sudden increase in or overwhelming number or volume of: the tsunami of Olympic visitors
Word Origin
from Japanese, from tsu port + nami wave
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Contemporary definitions for seismic-sea-wave

a tsunami; a series of long high surface ocean waves caused by a large-scale short-duration disturbance on the sea floor, such as an earthquake's 21st Century Lexicon
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Word Origin and History for seismic-sea-wave



1897, from Japanese tsunami, from tsu "harbor" + nami "waves."

Online Etymology Dictionary, © 2010 Douglas Harper
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seismic-sea-wave in Science
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. See Note at tidal wave.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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seismic-sea-wave in Culture
tsunami [(tsooh-nah-mee)]

A large wave on the ocean, usually caused by an undersea earthquake, a volcanic eruption, or coastal landslide. A tsunami can travel hundreds of miles over the open sea and cause extensive damage when it encounters land. Also called tidal waves.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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