insertion - definition and synonyms

noun 

Your browser doesn’t support HTML5 audio

/ɪnˈsɜː(r)ʃ(ə)n/
singularinsertion
pluralinsertions
  1. 1
    [uncountable] the act of putting something into something else
  2. 2
    [countable] something that is put into something else, especially an addition or a change in a piece of writing

    Editorial insertions are marked with a red pen.