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call sign

noun

Simple Definition of call sign

  • : a combination of letters and numbers that is used to identify someone or something in a radio broadcast

Source: Merriam-Webster's Learner's Dictionary

Full Definition of call sign

  1. :  the combination of identifying letters, letters and numbers, or words assigned to an operator, office, activity, vehicle, or station for use in communication (as in the address of a message sent by radio)

1919

First Known Use of call sign

1919


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