The Britannica Dictionary
mobile search
Home
Ask the Editor
Word of the Day
Quizzes
Core Vocabulary
Browse the Dictionary
×
Britannica Homepage
Ask the Editor
Word of the Day
Quizzes
Core Vocabulary
Browse the Dictionary
The Britannica Dictionary
id
6 ENTRIES FOUND:
id
(noun)
ID
(noun)
ID
(verb)
ID
(abbreviation)
ID card
(noun)
caller ID
(noun)
id
/
ˈ
ɪd/
noun
plural
ids
id
/
ˈ
ɪd/
noun
plural
ids
Britannica Dictionary definition of ID
[
count
]
psychology
:
a part of a person's unconscious mind that relates to basic needs and desires
—
compare
ego
,
superego
ASK THE EDITOR
What are the plural forms of
check-in
,
passerby
, and
spoonful
?
See the answer »
QUIZZES
Vocabulary Quiz
Test your word power
Take the Quiz »
Name That Thing
Take our visual quiz
Test Your Knowledge »
WORD OF THE DAY
compile
:
to create by gathering things (such as songs or pieces of writing or information)
Learn More »