side-effect

side effect

noun
1.
any effect of a drug, chemical, or other medicine that is in addition to its intended effect, especially an effect that is harmful or unpleasant.
2.
any accompanying or consequential and usually detrimental effect: the side effects of air pollution.
Also, side-effect.


Origin:
1880–85

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
side effect
 
n
1.  Compare aftereffect any unwanted nontherapeutic effect caused by a drug
2.  any secondary effect, esp an undesirable one

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

side-effect
1884, from side (adj.) + effect (n.). Medical use, with ref. to drugs, is recorded from 1939.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

side effect n.
A peripheral or secondary effect, especially an undesirable secondary effect of a drug or therapeutic regimen.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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FOLDOC
Computing Dictionary

side-effect definition


A language construct that modifies the state of the system. The most common side-effects are assignment, input and output. A language without side-effects is purely-functional - execution consists of the evaluation of an expression and all subexpressions are referentially transparent.
(1995-02-16)
The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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