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  1. a means of identification, as a card or bracelet containing official or approved identification information.
verb (used with object), ID'd or IDed or ID'ed, ID'ing or ID·ing.
  1. to identify.
  2. to issue an ID to: Go to the admissions office if you haven't been ID'd yet.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for idd

Contemporary Examples

British Dictionary definitions for idd


abbreviation for
  1. international direct dialling


abbreviation for
  1. Idaho
  2. identification (document)
  3. Also: i.d inside diameter
  4. Intelligence Department
  5. Also: i.d intradermal


  1. psychoanal the mass of primitive instincts and energies in the unconscious mind that, modified by the ego and the superego, underlies all psychic activity

Word Origin

C20: New Latin, from Latin: it; used to render German Es


the internet domain name for
  1. Indonesia
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for idd



1924, in Joan Riviere's translation of Freud's "Das Ich und das Es" (1923), from Latin id "it" (translation of German es "it" in Freud's title), used in psychoanalytical theory to denote the unconscious instinctual force. Latin id is from PIE pronomial stem *i- (see yon).

Online Etymology Dictionary, © 2010 Douglas Harper

idd in Medicine


  1. In psychoanalytic theory, the division of the psyche that is totally unconscious and serves as the source of instinctual impulses and demands for immediate satisfaction of primitive needs.


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

idd in Culture


In Freudian theory, the part of the psyche associated with instinctual, repressed, or antisocial desires, usually sexual or aggressive. In its efforts to satisfy these desires, the id comes into conflict with the social and practical constraints enforced by the ego and superego. (See also pleasure principle.)

The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.