[trou-muh, traw-]
noun, plural traumas, traumata [trou-muh-tuh, traw-] .
a body wound or shock produced by sudden physical injury, as from violence or accident.
the condition produced by this; traumatism.
an experience that produces psychological injury or pain.
the psychological injury so caused.

1685–95; < Greek traûma wound Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
trauma (ˈtrɔːmə)
n , pl -mata, -mas
1.  psychol a powerful shock that may have long-lasting effects
2.  pathol any bodily injury or wound
[C18: from Greek: a wound]

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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Word Origin & History

1656 (implied in traumatic), "physical wound," from Gk. trauma "wound," from PIE *tro-, *trau-, from base *tere- "to rub, turn" (see throw (v.)). Sense of "psychic wound, unpleasant experience which causes abnormal stress" is implied in traumatic, in psychological jargon 1889.
Traumatize in the psychological sense is attested from 1949.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

trauma trau·ma (trô'mə, trou'-)
n. pl. trau·mas or trau·ma·ta (-mə-tə)

  1. A serious bodily injury or shock, as from violence or an accident.

  2. An emotional wound or shock that creates substantial lasting damage to one's psychological development, often leading to neurosis.

trau·mat'ic (-māt'ĭk) adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
trauma   (trô'mə, trou'-)  Pronunciation Key 
  1. Severe bodily injury, as from a gunshot wound or a motor vehicle accident.

  2. Psychological or emotional injury caused by a deeply disturbing experience.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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American Heritage
Cultural Dictionary
trauma [(trow-muh, traw-muh)]

Wounds that result from sudden physical injury or violence.

Note: The term is frequently used to describe an emotional shock that causes serious psychological damage.
The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Example sentences
The cause has not yet been determined but preliminary laboratory tests revealed
  acute physical trauma.
But recovering from the physical and mental trauma of its punishing blows can
  present formidable challenges.
Most mental conditions can be traced back to some trauma.
Many of them had suffered long periods of mental trauma during their early
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