invasion

noun
in·​va·​sion | \ in-ˈvā-zhən How to pronounce invasion (audio) \

Definition of invasion

1 : an act of invading especially : incursion of an army for conquest or plunder
2 : the incoming or spread of something usually hurtful

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Examples of invasion in a Sentence

The enemy launched an invasion. The people live under a constant threat of invasion. The town is gearing up for the annual tourist invasion. protecting the house from insect invasion
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Recent Examples on the Web

The Avenger-class ships were called into service during the 2003 invasion of Iraq to stand ready for any mining near an Iraqi port that would be key for getting supplies and humanitarian aid into the country during the war. Robert Faturechi, ProPublica, "Iran Has Hundreds of Naval Mines. U.S. Navy Minesweepers Find Old Dishwashers and Car Parts.," 9 Aug. 2019 More than 1 million Chaldeans lived in Iraq before the 2003 U.S. invasion, but only a fraction remain today after years of emigration and violence at the hands of militants and the Islamic State. Tim Elfrink, BostonGlobe.com, "A Detroit man was deported to Iraq, a country he’d never been to. He died from lack of insulin, family says," 8 Aug. 2019 Joseph served our country in the U.S. Army Infantry during World War II and came ashore at St. Lo during the D-Day invasion. courant.com, "Joseph J. Dadona," 26 July 2019 Gerald had been shot in the chest while parachuting over Sainte-Mère-Eglise, which would become the first town liberated after the D-Day invasion. Chicago Tribune Staff, orlandosentinel.com, "For 73 years, a woman kept her wedding dress made from her husband’s WWII parachute. Now it will be displayed in a museum.," 7 July 2019 An aerial view of smoke from the US artillery and naval bombardment of a Japanese seaplane base at Flores Point, near Tanapag harbor, during the US invasion of Saipan in June 1944. Brad Lendon, CNN, "Losing one island cost Japan a war. That's a warning for the South China Sea," 5 July 2019 After the German invasion in 1941, Grossman was recruited as a frontline correspondent for Red Star, the official paper of the Red Army. Aaron Lake Smith, Harper's magazine, "The Trials of Vasily Grossman," 24 June 2019 While serving as radiomen, Henry and Louie died on June 19, 1944 — 13 days after the D-Day invasion — when their ship hit an underwater German mine off Normandy’s coast and sank, according to the agency. Char Adams, PEOPLE.com, "On the 75th Anniversary of D-Day, Twin Brothers Who Died Together at 19 Are 'Finally Side By Side'," 6 June 2019 As Kepperling's Ranger unit pushed through France and into Germany in the weeks and months after the D-Day invasion, he was wounded. Meg Jones, Milwaukee Journal Sentinel, "On 75th anniversary of invasion, D-Day veterans recall 'all hell was breaking loose'," 6 June 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'invasion.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of invasion

15th century, in the meaning defined at sense 1

History and Etymology for invasion

Middle English invasioune, from Anglo-French invasion, from Late Latin invasion-, invasio, from Latin invadere to invade

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More Definitions for invasion

invasion

noun

English Language Learners Definition of invasion

: the act of entering a place in an attempt to take control of it
: the act of entering a place in large numbers especially in a way that is harmful or unwanted

invasion

noun
in·​va·​sion | \ in-ˈvā-zhən How to pronounce invasion (audio) \

Kids Definition of invasion

: an act of invading

invasion

noun
in·​va·​sion | \ in-ˈvā-zhən How to pronounce invasion (audio) \

Medical Definition of invasion

: the act of invading: as
a : the penetration of the body of a host by a microorganism
b : the spread and multiplication of a pathogenic microorganism or of malignant cells in the body of a host

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invasion

noun
in·​va·​sion | \ in-ˈvā-zhən How to pronounce invasion (audio) \

Legal Definition of invasion

: the act of or an instance of invading

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