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.

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Origin of derealization

1940–45; de- + realization, orig. in the phrase feeling of derealization, as translation of German Entfremdungsgefühl (Freud)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

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