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Definition of "intrusion" []

  • The act of intruding or the condition of being intruded on. (noun)
  • An inappropriate or unwelcome addition. (noun)
  • Law Illegal entry upon or appropriation of the property of another. (noun)
  • Geology The forcing of molten rock into an earlier formation. (noun)
  • Geology The rock mass produced by an intrusive process. (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 "intrusion" in a sentence
  • "Canonists also extend the term intrusion to the keeping possession of a benefice by a hitherto lawful possessor, after it has been vacated by violation of certain decrees of the Church."
  • "There wasn't a lot of what they call intrusion into the cabin."
  • "It is the fashion of a modern school of historical writers to deplore what they call the intrusion of literature into history."