[ 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) Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Medicine definitions for derealization


[ dē-rē′ə-lĭ-zāshən ]


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

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.