Also found in: Medical.
All of the psyche that is not part of the ego or the conscious self.
[Translation of German Nichtich : nicht, not + Ich, I, ego.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Philosophy) philosophy everything that is outside one's conscious self, such as one's environment
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014