Meaning of “id” in the English Dictionary

"id" in English

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idnoun [ C ]

uk /ɪd/ us /ɪd/ specialized


uk /ˌaɪˈdiː/ us /ˌaɪˈdiː/

IDverb [ T ]

uk /ˌaɪˈdiː/ us /ˌaɪˈdiː/ informal


uk /aɪd/ us /aɪd/

short form of I had:

I'd just got in the bath when the phone rang.

short form of I would:

Of course I'd love to see you.

More examples

(Definition of “id” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"ID" in American English

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IDnoun [ C/U ]

us /ˈɑɪˈdi/

any official card or document with your name and other information on it that you use to prove who you are:

[ U ] You need two pieces of ID to cash a check.


us /ɑɪd/

contraction of I had or I would:

I’d (= I had) just got in the shower when the phone rang.
I’d (= I would) love to see you.

(Definition of “ID” from the Cambridge Academic Content Dictionary © Cambridge University Press)

"ID" in Business English

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uk /ˌaɪˈdiː/ us

[ U or C ] an official card or document with your name and photograph or other information on it, used for proving who you are. '"ID" is a short form for "identity" or "identification":

Voters without ID may cast provisional ballots, but then must appear before their county clerk or board of elections within 10 days.
carry/show/check ID You will need to show your ID before you can be admitted.

[ C ] also identifier IT a set of numbers, letters, or symbols that is used to represent a piece of data or a process in a computer program:

The Vendor ID and Device ID registers identify the device, and are commonly called the PCI ID.
See also

IDverb [ T ]

uk us ID's, ID'ing, ID'd

to officially state or prove who someone is, or to ask someone to show you an official card or document proving who they are:

The defense attorney maintains that the defendant was wrongly ID'd by witnesses.
If you look too young to buy alcohol, you will almost certainly be ID'd.

(Definition of “ID” from the Cambridge Business English Dictionary © Cambridge University Press)

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