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[pur-fuh-rey-shuh n] /ˌpɜr fəˈreɪ ʃən/
a hole, or one of a series of holes, bored or punched through something, as those between individual postage stamps of a sheet to facilitate separation.
a hole made or passing through a thing.
the act of perforating.
the condition or state of being perforated.
Origin of perforation
late Middle English
1400-50; late Middle English < Medieval Latin perforātiōn- (stem of perforātiō) a boring through. See perforate, -ion Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for perforation
  • They had perforation, but they would do the trick anyway.
  • In the early centuries, the perforation of matzoth was an artistic job.
  • Bladder perforation is a rare and life-threatening event.
  • However, there's bound to be considerable perforation from tiny meteorites.
  • The risk for perforation of the ureter increases the longer the procedure takes.
  • Indications for surgery include deterioration of the patient's condition, or signs of perforation or widespread infection.
  • Still no obvious symptoms that perforation is imminent, but an oppressive feeling of foreboding hangs over me.
  • Cold perforation simply refers to a cold pin that penetrates a material.
  • Laser perforation is a much more expensive version of perforation.
British Dictionary definitions for perforation


the act of perforating or the state of being perforated
a hole or holes made in something
  1. a method of making individual stamps, coupons, etc, easily separable by punching holes along their margins
  2. the holes punched in this way perf
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for perforation

early 15c., "hole made through something;" mid-15c., "action of perforating," from Middle French perforation or directly from Late Latin perforationem (nominative perforatio), noun of action from past participle stem of Latin perforare "bore or pierce through," from per- "through" (see per) + forare "to pierce" (see bore (v.1)).

Online Etymology Dictionary, © 2010 Douglas Harper
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perforation in Medicine

perforation per·fo·ra·tion (pûr'fə-rā'shən)

  1. The act of perforating or the state of being perforated.

  2. An abnormal opening in a hollow organ or viscus, as one made by rupture or injury.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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