Definition of insertion noun from the Oxford Advanced Learner's Dictionary



    BrE BrE//ɪnˈsɜːʃn//
    ; NAmE NAmE//ɪnˈsɜːrʃn//
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  1. 1[uncountable, countable] insertion (in/into something) the act of putting something inside something else; a thing that is put inside something else An examination is carried out before the insertion of the tube. Acupuncture involves the insertion of needles into specific points of the body.
  2. 2[countable, uncountable] a thing that is added to a book, piece of writing, etc.; the act of adding something the insertion of an extra paragraph
  3. Word Originmid 16th cent. (in sense (2)): from late Latin insertio(n-), from Latin inserere, from in- ‘into’ + serere ‘to join’.
See the Oxford Advanced American Dictionary entry: insertion