Dictionary.net

any of several psychotic disorders characterized by distortions of reality and disturbances of thought and language and withdrawal from social contact

any of several psychotic disorders characterized by distortions of reality and disturbances of thought and language and withdrawal from social contact

A severe emotional disorder of psychotic depth characteristically marked by a retreat from reality with delusion formation, hallucinations, emotional disharmony, and regressive behavior.

A term used by Bleuler including dementia praecox and other psychoses showing the marked libido splitting.