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aftershock

[af-ter-shok, ahf-]
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noun
  1. a small earthquake or tremor that follows a major earthquake.
  2. the effect, result, or repercussion of an event; aftermath; consequence: The aftershock of the bankruptcy was felt throughout the financial community.
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Origin of aftershock

First recorded in 1890–95; after + shock1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for aftershock

aftershock

noun
  1. one of a series of minor tremors occurring after the main shock of an earthquakeCompare foreshock
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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

Word Origin and History for aftershock

n.

also after-shock, 1894, from after + shock (n.1).

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Online Etymology Dictionary, © 2010 Douglas Harper

aftershock in Science

aftershock

[ăftər-shŏk′]
  1. A less powerful earthquake that follows a more forceful one. Aftershocks usually originate at or near the focus of the main earthquakes they follow and can continue for days or months. They usually decrease in magnitude and frequency with time.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.