fallout

[fawl-out]
noun
1.
the settling to the ground of airborne particles ejected into the atmosphere from the earth by explosions, eruptions, forest fires, etc., especially such settling from nuclear explosions (radioactive fallout) Compare rainout.
2.
the particles themselves. Compare rainout.
3.
an unexpected or incidental effect, outcome, or product: the psychological fallout of being obese.
4.
effects; results: emotional fallout from a divorce.
Also, fall-out.


Origin:
1945–50; noun use of verb phrase fall out

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
fallout (ˈfɔːlˌaʊt)
 
n
1.  the descent of solid material in the atmosphere onto the earth, esp of radioactive material following a nuclear explosion
2.  any solid particles that so descend
3.  informal side-effects; secondary consequences
 
vb
4.  informal to quarrel or disagree
5.  (intr) to happen or occur
6.  military to leave a parade or disciplinary formation
 
sentence substitute
7.  military the order to leave a parade or disciplinary formation

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

fallout
"radioactive particles," 1950, from fall (v.) + out.
Online Etymology Dictionary, © 2010 Douglas Harper
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Slang Dictionary

fallout definition


  1. n.
    the results of something; the flackfrom something. : The fallout from this afternoon's meeting was not as serious as some expected.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition.
Copyright 2007. Published by McGraw-Hill Education.
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Example sentences
Thus with a steadily decreasing radioactivity fallout the dose rate was not
  dangerous at all.
The collected fallout was measured daily for the amount of gross beta
  radioactivity present.
Tells about the fallout, both in human terms and legally, surrounding the
  research into her linguistic abilities.
That's not to say that the economy has suffered no fallout from the subprime
  collapse.
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