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Definition of perforation noun from the Oxford Advanced American Dictionary

     

    perforation

     noun
    noun
    NAmE//ˌpərfəˈreɪʃn//
     
     
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  1. 1[countable, usually plural, uncountable] a small hole in a surface, often one of a series of small holes Tear the sheet of stamps along the perforations. He made a small perforation in the lining of the tube.
  2. 2[uncountable] (medical) the process of splitting or tearing in such a way that a hole is left Excessive pressure can lead to perforation of the stomach wall.
See the Oxford Advanced Learner's Dictionary entry: perforation