Definition, Meaning & Synonyms

callback

noun
/ˈkɔːlˌbæk/
Definition
A callback is a function that is passed as an argument to another function and is executed after some operation has been completed.
Examples
  • Upon completing the download, the software will trigger a callback to notify the user.
  • She registered a callback with customer service to discuss her order.
Meaning
In programming, a callback refers to a command that a program executes after an event has been completed. It allows for asynchronous processing, especially in events like user interactions or I/O operations.
Synonyms
  • Return call
  • Follow-up call
  • Callback function (in programming)