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Definition of caller ID noun from the Oxford Advanced Learner's Dictionary

caller ID

noun
 
/ˌkɔːlər ˌaɪ ˈdiː/
 
/ˌkɔːlər ˌaɪ ˈdiː/
 [uncountable]
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  1. a system that uses a device on your phone to identify and display the phone number of the person who is calling youTopics Phones, email and the internetc2
See caller ID in the Oxford Advanced American Dictionary
Check pronunciation: caller ID

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noun
 
 
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