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Definition of psychoses - 3 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
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.
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)
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