[ 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.

Nearby words

  1. derby,
  2. derbyshire,
  3. derbyshire chair,
  4. dercum's disease,
  5. dere,
  6. derecho,
  7. derecognize,
  8. deregister,
  9. deregulate,
  10. deregulation

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.