ID noun - definition in the Business English Dictionary - Cambridge Dictionaries Online

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ID

noun
 
 
/ˌaɪˈdiː/
[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": For legal immigrants, a primary ID includes a green card, authorization of employment from the Department of Justice or certificate of naturalization. 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. →  See also identification
[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 user ID
(Definition of ID noun from the Cambridge Business English Dictionary © Cambridge University Press)
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