per·​fo·​ra·​tion | \ ˌpər-fə-ˈrā-shən How to pronounce perforation (audio) \

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

Synonyms for perforation


Visit the Thesaurus for More 

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 Those inserts, according to the women’s attorneys, said there was less than a 0.05 percent chance of infection, displacement of the device or perforation of organs. Washington Post, 1 Apr. 2022 The navy straps perforation holes now come in varying sizes, which is a nod to the early Monaco models of the’70s. Paige Reddinger, Robb Report, 30 Mar. 2022 But experts say those other methods are less safe than D&E, posing serious health risks such as infection, uterine perforation or death. Washington Post, 19 Aug. 2021 For example, a colonoscopy requires a preparation (mildly unpleasant and time-consuming), sedation (which can have side effects) and the procedure itself, which may have unexpected bad outcomes (such as a perforation). Dr. Keith Roach, oregonlive, 8 Sep. 2021 Gummies are marked with a perforation so consumers can easily tear them into a smaller dose, if needed. Georgann Yara, The Arizona Republic, 3 Sep. 2021 Dakota was euthanized Monday after being found to have a perforation in his gastrointestinal tract, said Jared Bednar, the zoo’s director of administration and creative. From Usa Today Network And Wire Reports, USA TODAY, 19 Aug. 2021 One of her concerns was a possible perforation requiring additional surgery and a temporary colostomy. Dr. Keith Roach, oregonlive, 18 Aug. 2021 The microfiber material gives for a perforation style of design to keep your hands moving well. Chris Hachey, BGR, 15 June 2021 See More

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.

First Known Use of perforation

15th century, in the meaning defined at sense 1

Learn More About perforation

Time Traveler for perforation

Time Traveler

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

See more words from the same century

Dictionary Entries Near perforation

perforating rule


perforation gauge

See More Nearby Entries 

Statistics for perforation

Last Updated

11 May 2022

Cite this Entry

“Perforation.” Dictionary, Merriam-Webster, Accessed 27 May. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

More Definitions for perforation


per·​fo·​ra·​tion | \ ˌpər-fə-ˈrā-shən How to pronounce perforation (audio) \

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

More from Merriam-Webster on perforation

Nglish: Translation of perforation for Spanish Speakers

Britannica English: Translation of perforation for Arabic Speakers


Test Your Vocabulary

Which Word Does Not Belong?

  • one green toy robot amidst many red toy robots
  • Which of these words does not mean "nonsense"?
Spell It

Can you spell these 10 commonly misspelled words?

Universal Daily Crossword

A daily challenge for crossword fanatics.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!