Meaning of “psychosis” in the English Dictionary

"psychosis" in British English

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psychosisnoun [ C or U ]

uk /saɪˈkəʊ.sɪs/ us /saɪˈkoʊ.sɪs/ plural psychoses

any of a number of the more severe mental diseases that make someone believe things that are not real:

She fell into a drug-induced psychosis.

(Definition of “psychosis” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"psychosis" in American English

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psychosisnoun [ C/U ]

us /sɑɪˈkoʊ·sɪs/ plural psychoses /sɑɪˈkoʊˌsiz/ medical
psychotic
adjective us /sɑɪˈkɑt̬·ɪk/

medical

psychotic delusions

(Definition of “psychosis” from the Cambridge Academic Content Dictionary © Cambridge University Press)