9 Grammatical Pitfalls


[af-ter-shok, ahf-] /ˈæf tərˌʃɒk, ˈɑf-/
a small earthquake or tremor that follows a major earthquake.
the effect, result, or repercussion of an event; aftermath; consequence:
The aftershock of the bankruptcy was felt throughout the financial community.
Origin of aftershock
1890-95; after + shock1 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for aftershock
  • Even people whose homes remained whole chose to sleep outside, lest they be caught in another aftershock.
  • These maps graphically illustrate the change in earthquake probability during aftershock and possible foreshock sequences.
  • UW seismologists concluded that this was not an earthquake-aftershock sequence, but rather a swarm of individual earthquakes.
  • From this rate, the probability of an aftershock can be determined.
  • In studying these phenomena, aftershock waveform recordings can play an important role.
  • Seismogram showing contrast of activity in the aftershock zone.
British Dictionary definitions for aftershock


one of a series of minor tremors occurring after the main shock of an earthquake Compare foreshock
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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Word Origin and History for aftershock

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

Online Etymology Dictionary, © 2010 Douglas Harper
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aftershock in Science
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.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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