Definition of function key in English:

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function key

Pronunciation: /ˈfəNG(k)SHən ˌkē/

noun

Computing
A button on a computer keyboard, distinct from the main alphanumeric keys, to which software can assign a particular function.
Example sentences
  • You use the four way key to select a function, and more importantly the right function key to choose functions.
  • To get around that, map an unused function key to run the program.
  • When the system is booted up and is showing the login screen, press and hold the Ctrl-Alt keys and press the F1 function key.

For editors and proofreaders

Syllabification: func·tion key

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