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Definition of psychosis - 5 dictionary results

psy⋅cho⋅sis

[sahy-koh-sis]
–noun, plural -ses [-seez] .
1. a mental disorder characterized by symptoms, such as delusions or hallucinations, that indicate impaired contact with reality.
2. any severe form of mental disorder, as schizophrenia or paranoia.

Origin:
1840–50; < LGk psȳ́chōsis animation, principle of life. See psych-, -osis
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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psy·cho·sis   (sī-kō'sĭs)   
n.   pl. psy·cho·ses (-sēz)
A severe mental disorder, with or without organic damage, characterized by derangement of personality and loss of contact with reality and causing deterioration of normal social functioning.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: psy·cho·sis
Pronunciation: sI-'kO-s&s
Function: noun
Inflected Form: plural psy·cho·ses /-"sEz/
: a serious mental disorder (as schizophrenia) characterized by defective or lost contact with reality often with hallucinations or delusions
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

psychosis psy·cho·sis (sī-kō'sĭs)
n. pl. psy·cho·ses (-sēz)
A severe mental disorder, with or without organic damage, characterized by derangement of personality and loss of contact with reality and causing deterioration of normal social functioning.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Science Dictionary
psychosis   (sī-kō'sĭs)  Pronunciation Key 
Plural psychoses (sī-kō'sēz)
A mental state caused by psychiatric or organic illness, characterized by a loss of contact with reality and an inability to think rationally. A psychotic person often behaves inappropriately and is incapable of normal social functioning.

psychotic adjective (sī-kŏt'ĭk)
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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