disturbance

[dih-stur-buhns]
noun
1.
the act of disturbing.
2.
the state of being disturbed.
3.
an instance of this; commotion.
4.
something that disturbs.
5.
an outbreak of disorder; a breach of public peace: Political disturbances shook the city.
6.
Meteorology. any cyclonic storm or low-pressure area, usually a small one.
7.
Geology. a crustal movement of moderate intensity, somewhat restricted in area.

Origin:
1250–1300; Middle English disto(u)rbance < Anglo-French, Old French. See disturb, -ance

nondisturbance, noun
predisturbance, noun


2. perturbation, confusion. See agitation. 5. confusion, tumult, riot. See disorder.


3. order.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
disturbance (dɪˈstɜːbəns)
 
n
1.  the act of disturbing or the state of being disturbed
2.  an interruption or intrusion
3.  an unruly outburst or tumult
4.  law an interference with another's rights
5.  geology
 a.  a minor movement of the earth causing a small earthquake
 b.  a minor mountain-building event
6.  meteorol a small depression
7.  psychiatry a mental or emotional disorder

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline
Word Origin & History

disturbance
late 13c., from O.Fr. destorbance (12c.), from destourber, from L. disturbare (see disturb).
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
Influences of disturbance size and frequency on landscape structure.
Local reproduction, disturbance, and the maintenance of diversity in
  species-rich communities.
But the bushes below the windows showed no trace of disturbance, nor was there
  any evidence in the rooms to suggest a break-in.
The collision produces a wave disturbance moving inland to the southwest that
  is a key part of the cloud formation.
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