id

[ id ]
See synonyms for id on Thesaurus.com
nounPsychoanalysis.
  1. the part of the psyche, residing in the unconscious, that is the source of instinctive impulses that seek satisfaction in accordance with the pleasure principle and are modified by the ego and the superego before they are given overt expression.

Origin of id

1
1920–25; <Latin id it, as a translation of German Es, special use of es it, as a psychoanalytic term

Other definitions for ID (2 of 12)

ID1
[ ahy-dee ]

noun
  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.

Origin of ID

2
First recorded in 1935–40

Other definitions for ID (3 of 12)

ID2

abbreviation
  1. Idaho (approved especially for use with zip code).

  1. inner diameter, internal diameter, or inside diameter.: Also i.d.

Other definitions for I'd (4 of 12)

I'd
[ ahyd ]

  1. contraction of I had:I'd never seen anything like it before!

  2. contraction of I would:If I were you, I'd be careful what I wish for.

Origin of I'd

4
First recorded in 1590–1600

usage note For I'd

Other definitions for -id (5 of 12)

-id1

  1. a suffix of nouns that have the general sense “offspring of, descendant of,” occurring originally in loanwords from Greek (Atreid; Nereid), and productive in English on the Greek model, especially in names of dynasties, with the dynasty's founder as the base noun (Abbasid; Attalid), and in names of periodic meteor showers, with the base noun usually denoting the constellation or other celestial object in which the shower appears (Perseid).

Origin of -id

5
<Latin -id-, stem of -is<Greek: feminine patronymic suffix; or <Latin -idēs<Greek: masculine patronymic suffix

Other definitions for -id (6 of 12)

-id2

  1. a suffix occurring in English derivatives of modern Latin taxonomic names, especially zoological families and classes; such derivatives are usually nouns denoting a single member of the taxon or adjectives with the sense “pertaining to” the taxon: arachnid; canid.

Origin of -id

6
<Greek -idēs-id1, as singular of New Latin -ida-ida or -idae-idae

Other definitions for -id (7 of 12)

-id3

  1. variant of -ide: lipid.

Other definitions for -id (8 of 12)

-id4

  1. a suffix occurring in descriptive adjectives borrowed from Latin, often corresponding to nouns ending in -or1 : fetid; humid; pallid.

Origin of -id

8
From the Latin suffix -idus

Other definitions for id. (9 of 12)

id.

abbreviation
  1. idem.

Other definitions for Id. (10 of 12)

Id.

abbreviation
  1. Idaho.

Other definitions for ID. (11 of 12)

ID.

abbreviation
  1. (in Iraq) dinar; dinars.

Other definitions for I.D. (12 of 12)

I.D.

abbreviation
  1. identification.

  2. identity.

  1. Military. Infantry Division.

  2. Intelligence Department.

Origin of I.D.

12
First recorded in 1950–55

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

British Dictionary definitions for id (1 of 9)

id1

/ (ɪd) /


noun
  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

Origin of id

1
C20: New Latin, from Latin: it; used to render German Es

British Dictionary definitions for id (2 of 9)

id2

the internet domain name for
  1. Indonesia

British Dictionary definitions for ID (3 of 9)

ID

abbreviation for
  1. Idaho

  2. identification (document)

  1. Also: i.d inside diameter

  2. Intelligence Department

  3. Also: i.d intradermal

British Dictionary definitions for I'd (4 of 9)

I'd

/ (aɪd) /


contraction of
  1. I had or I would

British Dictionary definitions for -id (5 of 9)

-id1

suffix forming nouns
  1. indicating the names of meteor showers that appear to radiate from a specified constellation: Orionids (from Orion)

  2. indicating a particle, body, or structure of a specified kind: energid

Origin of -id

5
from Latin -id-, -is, from Greek, feminine suffix of origin

British Dictionary definitions for -id (6 of 9)

-id2

suffix forming adjectives, suffix forming nouns
  1. indicating members of a zoological family: cyprinid

  2. indicating members of a dynasty: Seleucid; Fatimid

Origin of -id

6
from New Latin -idae or -ida, from Greek -idēs suffix indicating offspring

British Dictionary definitions for -id (7 of 9)

-id3

suffix forming nouns
  1. a variant of -ide

British Dictionary definitions for id. (8 of 9)

id.

abbreviation for
  1. idem

British Dictionary definitions for Id. (9 of 9)

Id.

abbreviation for
  1. Idaho

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

Cultural definitions for id

id

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.