Definition of psychosis in English:


Syllabification: psy·cho·sis
Pronunciation: /sīˈkōsəs

noun (plural psychoses /-ˌsēz/)

A severe mental disorder in which thought and emotions are so impaired that contact is lost with external reality.
More example sentences
  • Most paranoid psychoses are chronic rather than episodic, but Schreber had an initial mental illness lasting from October 1884 to June 1885 from which he made a good recovery.
  • Thus the significant differences between LSD and schizophrenic psychoses appear to be in the affective nature of LSD psychosis and the greater incidence of delusions and auditory hallucinations in schizophrenics.
  • Only serious psychoses that required psychiatric consultation and/or treatment were considered as mental disturbances.


mid 19th century: from Greek psukhōsis 'animation', from psukhoun 'give life to', from psukhē 'soul, mind'.

Definition of psychosis in: