Meaning of “perforation” in the English Dictionary

british dictionary

"perforation" in British English

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/ˌpɜː.fərˈeɪ.ʃən/ /ˈpɝː.fəˈreɪ.ʃən/

[ C ] a hole in something:

A tea bag is full of tiny perforations.

[ C or U ] specialized medical a hole that goes all the way through a membrane or tissue or the act of making a hole like this:

One possible complication of colonoscopy is a perforation through the bowel wall that could require surgery.

(Definition of “perforation” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)