1. 1. The act of depersonalizing.
   2. The state of being depersonalized.
2. Psychology. A state in which the normal sense of personal identity and reality is lost.

The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.