per·​fo·​ra·​tion | \ ˌpər-fə-ˈrā-shən \

Definition of perforation

1 : the act or process of perforating
2a : a hole or pattern made by or as if by piercing or boring
b : one of the series of holes (as between rows of postage stamps) in a sheet that serve as an aid in separation

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Synonyms for perforation


pinhole, pinprick, prick, punch, puncture, stab

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Examples of perforation in a Sentence

an infection that can cause perforation of the intestine absentmindedly made perforations in his paper with his pencil

Recent Examples on the Web

In fact, perforation most often happens due to an error during placement. Korin Miller, SELF, "13 Things You Absolutely Should Know Before Getting the Copper IUD," 20 July 2018 Marked by sudden intense pain in the abdomen, fever and nausea, diverticulitis can result in serious, even life-threatening complications like an abscess or perforation of the colon that allows bowel contents to leak into the abdomen. Laura Landro, WSJ, "Doctors Rethink the Cause—and Treatment—of Diverticular Disease," 20 Nov. 2018 Apollo Endosurgery said that as of March 31, the global rate of spontaneous hyperinflation of its devices after operations was 0.07%, and the gastric perforation rate was 0.01%. Susan Scutti, CNN, "Weight loss balloons now linked to 12 deaths," 4 June 2018 Once inside the container, Bessemer blasted air through perforations on the bottom. Jonathan Schifman, Popular Mechanics, "The Entire History of Steel," 9 July 2018 Uncomplicated diverticulitis: If an attack occurs without sepsis, without free perforation or any other complication, it can usually be treated without surgery. Andrea K. Mcdaniels,, "Diverticulitis can cause digestive problems for some," 7 June 2018 The rates of esophageal perforation, pancreatitis and mortality were each less than 0.01%. Susan Scutti, CNN, "Weight loss balloons now linked to 12 deaths," 4 June 2018 The result is a culinary theater-in-the-round, starring a butter-pastry cascade of rosettes, hearts, leaves, vines, berries, braids, stars, paisley, perforations, diamonds and dots. Rebecca Powers,, "A German baker has taken pie art to a mesmerizing new level," 19 June 2018 Those symptoms may progress, however, to serious complications like esophageal perforation, vocal cord paralysis, or erosion of the airway or blood vessels. Rita Giordano,, "What to do after a child swallows a button battery? Try honey, CHOP study suggests," 11 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'perforation.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of perforation

15th century, in the meaning defined at sense 1

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Last Updated

7 Jan 2019

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Time Traveler for perforation

The first known use of perforation was in the 15th century

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English Language Learners Definition of perforation

: a small hole or series of small holes in paper, cardboard, etc.
medical : a hole in part of the body caused by an accident or disease


per·​fo·​ra·​tion | \ ˌpər-fə-ˈrā-shən \

Medical Definition of perforation

1 : the act or process of perforating specifically : the penetration of a body part through accident or disease spontaneous perforation of the sigmoid colon in the presence of diverticulosis Journal of the American Medical Association
2a : a rupture in a body part caused especially by accident or disease
b : a natural opening in an organ or body part

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