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psychosis

nounattested in dialogue

  • United Kingdom//saɪˈkəʊsɪs//
  • United States//saɪˈkoʊsɪs//

A severe mental disorder, sometimes with physical damage to the brain, marked by a deranged personality and a distorted view of reality.

noun

  1. 1

    A severe mental disorder, sometimes with physical damage to the brain, marked by a deranged personality and a distorted view of reality.

    Manganism has been known about since the 19th century, when miners exposed to ores containing manganese[…]began to totter, slur their speech and behave like someone inebriated. The poisoning was irreversible, and soon ended in psychosis and death.

Etymology

From psych- + -osis. Not related to Ancient Greek ψύχωσις (psúkhōsis, “animation, principle of life”).

Forms

plural
psychoses
The neighbouring pagesAlphabetical order follows the rules of the language, not byte values: an accent decides only between two otherwise identical words, and Spanish files Ñ as a letter of its own.

Lexical content from Wiktionary, under CC BY-SA 4.0 · Source entry · Data version 2026-08-23

Rank among the words of the OpenSubtitles 2018 corpus — film and television subtitles, so spoken rather than written usage (CC BY-SA 3.0).