\ˈid \

Definition of id 

(Entry 1 of 7)

: the one of the three divisions of the psyche in psychoanalytic theory that is completely unconscious and is the source of psychic energy derived from instinctual needs and drives — compare ego, superego

id

abbreviation (1)

Definition of id (Entry 2 of 7)

idem

\ˈī-ˈdē \
plural ID's or IDs

Definition of ID (Entry 3 of 7)

: a document (such as a card) bearing identifying information about and often a photograph of the individual whose name appears on it

called also ID card, identification card, identity card

ID

verb
\ˈī-ˈdē \
ID'd or IDed; ID'ing or IDing

Definition of ID (Entry 4 of 7)

transitive verb

: identify ID'd the thief

ID

abbreviation (2)

Definition of ID (Entry 5 of 7)

1 Idaho

2 identification

3 independent distributor

4 industrial design

5 often not capitalized inside diameter; inner diameter; internal diameter

6 often not capitalized inside dimensions

7 intelligence department

Definition of -id (Entry 6 of 7)

1 : one belonging to a (specified) dynastic line Abbasid

2 : meteor associated with or radiating from a (specified) constellation or comet Perseid

Definition of -id (Entry 7 of 7)

: body : particle chromatid

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Did You Know?

In Latin, id means simply "it". Sigmund Freud (and his translator) brought the word into the modern vocabulary as the name of what Freud believed to be one of the three basic elements of the human personality, the other two being the ego and the superego. According to Freud, the id is the first of these to develop, and is the home of the body's basic instincts, particularly those involving sex and aggression. Since the id lacks logic, reason, or even organization, it can contain conflicting impulses. Primitive in nature, it wants to be satisfied immediately. Although its workings are completely unconscious, Freud believed that its contents could be revealed in works of art, in slips of the tongue ("Freudian slips"), and in one's dreams.

Examples of id in a Sentence

Verb

The police have not yet ID'd the victim. studies that show that eyewitnesses are surprisingly unreliable when called upon to ID the perpetrators of crimes

First Known Use of id

Noun (1)

1924, in the meaning defined above

Noun (2)

1941, in the meaning defined above

Verb

1944, in the meaning defined above

History and Etymology for id

Noun (1)

New Latin, from Latin, it

Noun suffix (1)

in sense 1, from Latin -ides, masculine patronymic suffix, from Greek -idēs; in sense 2, from Italian -ide, from Latin -id-, -is, feminine patronymic suffix, from Greek

Noun suffix (2)

probably from Latin -id-, -is, feminine patronymic suffix, from Greek

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Learn More about id

Dictionary Entries near id

icy cold

ICYMI

ID

id

-id

IDA

-idae

Statistics for id

Look-up Popularity

Time Traveler for id

The first known use of id was in 1924

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More Definitions for id

id

noun

English Language Learners Definition of id

 (Entry 1 of 3)

psychology : a part of a person's unconscious mind that relates to basic needs and desires

ID

noun

English Language Learners Definition of ID (Entry 2 of 3)

: a document, card, etc., that has your name and other information about you and that often includes your photograph

ID

verb

English Language Learners Definition of ID (Entry 3 of 3)

: to find out the identity of (someone or something)

Kids Definition of ID

1 Idaho

2 identification

id

noun
\ˈid \

Medical Definition of id 

(Entry 1 of 4)

: the one of the three divisions of the psyche in psychoanalytic theory that is completely unconscious and is the source of psychic energy derived from instinctual needs and drives — compare ego, superego

id

noun

Medical Definition of id (Entry 2 of 4)

: a skin rash that is an allergic reaction to an agent causing an infection a syphilitic id tinea pedis and the vesicular ids arising from itJournal of the American Medical Association — compare bacterid

Medical Definition of id (Entry 3 of 4)

the same

Medical Definition of ID (Entry 4 of 4)

1 identification

2 inside diameter; internal diameter

3 intradermal

History and Etymology for id

Abbreviation

Latin idem

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Legal Definition of id. 

idem

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Comments on id

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