(psychiatry) a major mental disorder typically characterized by a separation of the thoughtprocesses and the emotions, a distortion of reality accompanied by delusions and hallucinations, a fragmentation of the personality, motor (involving muscular movement) disturbances, bizarre behavior, etc. The word schizophrenia means "scissors" or "two" plus "head"--a two-head, in other words. —HDA Tapes (Oakland Lectures) Approved Glossary (16.4.92)