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Definition of "perforation" [per•fo•ra•tion]

  • A hole or series of holes punched or bored through something, especially a hole in a series, separating sections in a sheet or roll. (noun)
  • The act of perforating. (noun)
  • The state of being perforated. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Use "perforation" in a sentence
  • "They have them now where the perforation is not visible."
  • "Both values were printed on the wove paper used for the other denominations then current and the perforation was the usual 12 made by single-line machines."
  • "The perforation is the usual 12 and specimens are known entirely imperforate."