spellchecking

/S P EH1 L CH EH1 K IH0 NG/
verb
  1. 1

    To check that words in written text are properly spelled.

  2. 2

    To run a spellchecker on (a document).

Source: https://en.wiktionary.org/wiki/spellcheck, https://en.wiktionary.org/wiki/spellchecking