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seismic

 - 3 dictionary results

seis⋅mic

  [sahyz-mik, sahys-]
Use seismic in a Sentence
–adjective
pertaining to, of the nature of, or caused by an earthquake or vibration of the earth, whether due to natural or artificial causes.
Also, seismal, seis⋅mi⋅cal.

Origin:
1855–60; seism + -ic

Related forms:
seis⋅mi⋅cal⋅ly, adverb
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To seismic
seis·mic   (sīz'mĭk)   
adj.  

  1. Of, subject to, or caused by an earthquake or earth vibration.

  2. Earthshaking: an issue of seismic proportions and ramifications.

seis'mi·cal·ly adv.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Word Origin & History

seismic 
1858, from Gk. seismos "earthquake," from seiein "to shake." Seismological is attested from 1850; seismometer is from 1841.
Online Etymology Dictionary, © 2001 Douglas Harper
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