We're working on a new site. Click here to get a sneak preview.
Medical Dictionary


noun psy·cho·sis \sī-ˈkō-səs\
plural psy·cho·ses \-ˌsēz\

Medical Definition of PSYCHOSIS

:  a serious mental disorder (as schizophrenia) characterized by defective or lost contact with reality often with hallucinations or delusions
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears