invasion

noun
in·va·sion | \in-ˈvā-zhən \

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

Santos, a big backer of U.S. attempts to isolate Maduro, said an invasion would have zero support in the region. Joshua Goodman, Anchorage Daily News, "Trump pressed aides on Venezuela invasion, US official says," 4 July 2018 While all of that is great news for Belize, Root points out that the reef still faces challenges from increasing cruise-ship tourism and development, an invasion of lionfish, which decimate other tropical species, and pollution runoff. Jason Daley, Smithsonian, "How the Belize Barrier Reef Beat the Endangered List," 28 June 2018 Contrary to current trends, this isn’t due to an invasion by a brash budget carrier like Wow or Norwegian. Barbara Peterson, Condé Nast Traveler, "More People Will Be Visiting Portugal This Year—Here's Why," 19 June 2018 But several local attorneys said recording a contract sale was an unwarranted invasion of privacy and unneeded. Steve Lord, Aurora Beacon-News, "Updated property maintenance rules approved in Aurora," 13 June 2018 Despite back-to-back picturesque days of racing at Barber Motorsports Park, storm clouds are plotting an invasion. Jim Ayello, Indianapolis Star, "IndyCar drivers share keys to surviving and thriving in a rain race," 21 Apr. 2018 The fight against an insect invasion that's killing coastal wetlands is receiving long sought-after help from the federal government. Tristan Baurick, NOLA.com, "Congress pours money into fight against Louisiana's wetland pest," 29 Mar. 2018 The book is set in the aftermath of an alien invasion, and follows Violet, a transgender girl who has escaped capture and discovered that an alien parasite has given her strange powers. Andrew Liptak, The Verge, "A transgender girl rises up against alien invaders in Rich Larson’s novel Annex," 8 July 2018 If our current administration was in charge during WWII, the Normandy invasion would have been leaked a month in advance. … Stink O’ The Week Sezment: 21st Century music. Nick Canepa, sandiegouniontribune.com, "Latest star Laker? Yeah, just forgot all the early great ones," 7 July 2018

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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Phrases Related to invasion

invasion of (someone's) privacy

Statistics for invasion

Last Updated

14 Oct 2018

Look-up Popularity

Time Traveler for invasion

The first known use of invasion was in the 15th century

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More Definitions for invasion

invasion

noun
in·va·sion | \in-ˈvā-zhən \

Kids Definition of invasion

: an act of invading

invasion

noun
in·va·sion | \in-ˈvā-zhən \

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

invasion

noun
in·va·sion | \in-ˈvā-zhən \

Legal Definition of invasion 

: the act of or an instance of invading

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Comments on invasion

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