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mental illness

any of the various forms of psychosis or severe neurosis.
Also called mental disorder, mental disease.
Origin of mental illness
First recorded in 1960-65 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for mental disease
Historical Examples
  • They are suffering from a mental disease of discouragement and loss of hope.

    The Victorious Attitude Orison Swett Marden
  • Hyperboreans have a mental disease which renders them liable to suggestion.

    Folkways William Graham Sumner
  • In no branch of medicine or sociology is this fallacy more fruitful of error than in the domain of mental disease.

  • What applies to physical disease is just as applicable to mental disease.

    The Necessity of Atheism Dr. D.M. Brooks
  • At the present moment a most grotesque and painful form of mental disease has come under my notice.

    A Master of Mysteries L. T. Meade
  • Grard died a violent death, but he was afflicted with mental disease.

    Vie de Bohme Orlo Williams
  • The sexual passion has often been compared to drunkenness or to mental disease.

    The Sexual Question August Forel
  • Sadness and pessimism are the worst forms of mental disease I know.

    The Angel of Pain E. F. Benson
  • More akin to the tics is stereotypy of written language, so common an appanage of mental disease.

  • He has signs of mental disease which cannot now be confused with drink.

British Dictionary definitions for mental disease

mental illness

any of various disorders in which a person's thoughts, emotions, or behaviour are so abnormal as to cause suffering to himself, herself, or other people
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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mental disease in Medicine

mental disease n.
See mental illness.

mental illness n.
Any of various disorders characterized chiefly by abnormal behavior or an inability to function socially, including diseases of the mind and personality and certain diseases of the brain. Also called mental disease, mental disorder.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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mental disease in Science
mental illness
Any of various psychiatric disorders or diseases, usually characterized by impairment of thought, mood, or behavior.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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