Psychosis
Pronunciation: /sʌɪˈkəʊsɪs/
noun (plural psychoses sʌɪˈkəʊsiːz)
noun (plural psychoses sʌɪˈkəʊsiːz)
A severe mental disorder in which thought and emotions are so impaired that contact is lost with external reality: they were suffering from a psychosis.
[mass noun]: the symptoms of psychosis.