derealization

[ dee-ree-uh-luh-zey-shuh n ]
/ diˌri ə ləˈzeɪ ʃən /

noun Psychiatry.

an alteration in perception leading to the feeling that the reality of the world has been changed or lost.

Origin of derealization

1940–45; de- + realization, orig. in the phrase feeling of derealization, as translation of German Entfremdungsgefühl (Freud)

Medical definitions for derealization

derealization
[ dē-rē′ə-lĭ-zāshən ]

n.

The feeling that things in one's surroundings are strange, unreal, or somehow altered, as seen in schizophrenia.