caller ID
noun
\ -ˌī-ˈdē
\
\
Definition of caller ID
: a telephone service that allows a subscriber to identify the telephone number of a caller before answering the call
— called also caller identification
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More Definitions for caller ID
caller ID
noun
English Language Learners Definition of caller ID
: a service that allows you to see who is calling before you answer a telephone call
See the full definition for caller ID in the English Language Learners Dictionary