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Definition of "invasion" []

  • The act of invading, especially the entrance of an armed force into a territory to conquer. (noun)
  • A large-scale onset of something injurious or harmful, such as a disease. (noun)
  • An intrusion or encroachment. (noun)
  • The act of invading with armed forces (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.

  • Any encroachment or intrusion (noun)
  • The onset or advent of something harmful, esp of a disease (noun)
  • The spread of cancer from its point of origin into surrounding tissues (noun)
  • The movement of plants to a new area or to an area to which they are not native (noun)

www.Collinsdictionary.com (c) HarperCollins Publishers Ltd 2016

Use "invasion" in a sentence
  • "However, the real history is that al-Qaeda had no real foothold in Iraq until the U.S. invasion in 2003 – and that al-Qaeda's leadership saw its post-U. S.-invasion efforts there as a way to divert American forces so the terror group could rebuild its operations in Pakistan and Afghanistan."
  • "SOITM believes that the Turkish possible interference against PKK in Iraq is intervention and not invasion, therefore, the term ´intervention´ is used instead of ´invasion´ in the SOITM presentation."
  • "However, the real history is that al-Qaeda had no real foothold in Iraq until the U.S. invasion in 2003 †"and that al-Qaeda's leadership saw its post-U. S.-invasion efforts there as a way to divert American forces so the terror group could rebuild its operations in Pakistan and Afghanistan."