Psychosis Definition

sī-kōsĭs
psychoses
noun
A major mental disorder in which the personality is very seriously disorganized and contact with reality is usually impaired: psychoses are of two sorts, a) functional (characterized by lack of apparent organic cause, and principally of the schizophrenic, paranoid, or bipolar type), and b) organic (characterized by a pathological organic condition such as brain damage or disease, metabolic disorders, etc.)
Webster's New World
Psychosis is a serious mental disorder in which a person has impaired views of reality and whose personality is very disorganized.
An example of psychosis is a condition causing a person to hallucinate.
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Other Word Forms of Psychosis

Noun

Singular:
psychosis
Plural:
psychoses

Origin of Psychosis

  • From psych- +"Ž -osis or from Ancient Greek ψύχωσις (psykhosis, “animation, principle of life").

    From Wiktionary

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