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Word of the Day Tuesday, June 9, 2026

callback

/kæbˈbæk/ noun, verb · British & US
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What does callback mean?

noun, verb

A function passed as an argument to another function, to be executed after a specific operation has completed. In computing, a callback is a function that is passed as an argument to another function, which is then executed after a specific operation has completed.

Example

"The server will send a callback to the client when the data is ready."

Definition generated by AI and curated by RJS Tech Solutions LLP.

Synonyms for callback

Rhymes with callback

Etymologically related