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personality disorder

noun, Psychiatry.
1.
any of a group of mental disorders characterized by deeply ingrained maladaptive patterns of behavior and personality style, which are usually recognizable as early as adolescence and are often lifelong in duration.
Origin
1935-1940
1935-40
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for personality-disorder

personality disorder

noun
1.
(psychiatry) any of a group of mental disorders characterized by a permanent disposition to behave in ways causing suffering to oneself or others
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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personality-disorder in Medicine

personality disorder n.
Any of a group of disorders in which patterns of perceiving, relating to, and thinking about one's self and one's environment interfere with the long-term functioning of an individual, often manifested in deviant behavior and lifestyle.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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personality-disorder in Science
personality disorder
  (pûr'sə-nāl'ĭ-tē)   
Any of a group of psychiatric disorders in which a person's abnormal self-perception or ability to relate to others results in undesirable behaviors and interferes with normal social and emotional functioning.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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