invasion

noun

in·​va·​sion in-ˈvā-zhən How to pronounce invasion (audio)
1
: an act of invading
especially : incursion of an army for conquest or plunder
2
: the incoming or spread of something usually hurtful

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
Recent Examples on the Web Israel declared war on Hamas in response, launching a ground invasion that fueled the biggest displacement in the region since Israel’s creation in 1948. Shira Rubin, Washington Post, 10 Apr. 2024 Weaning itself off gas has been a particular challenge for Germany, which had become used to powering its heavy industries with cheap imports from Russia in the decades before the invasion of Ukraine and the ensuing energy crisis. Rodrigo Orihuela, Fortune Europe, 9 Apr. 2024 April 8, 2024 Two years after Russia launched its full-scale invasion of Ukraine, the hourly artillery duels, airstrikes and pitched fighting in the country’s east and south have turned the more than 600-mile front line into a scarred frontier. Emile Ducke Thomas Gibbons-Neff, New York Times, 8 Apr. 2024 Historically, some of the most valuable openings have come as a result of missteps by Washington and its partners in the region, such as the U.S. invasion of Iraq in 2003. Suzanne Maloney, Foreign Affairs, 8 Apr. 2024 Russia's invasion of Ukraine has made Japan more worried about China trying to move on Taiwan. Selina Wang, ABC News, 8 Apr. 2024 The country also hosted Russian and Chinese naval forces for an exercise that occurred on the anniversary of the invasion. Peter Aitken, Fox News, 6 Apr. 2024 Russ Wiles Warmer weather means more motorists on the road and slightly higher gasoline prices at the pump, though no sharp increases as in 2022, when Russia’s invasion of Ukraine disrupted international supplies of crude oil. The Arizona Republic, 5 Apr. 2024 The Israeli military said at least 256 soldiers have been killed since the ground invasion of Gaza began. NBC News, 5 Apr. 2024

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'invasion.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

Middle English invasioun "assault, attack," borrowed from Anglo-French invasion, envasioun, borrowed from Late Latin invāsiōn-, invāsiō "attack, taking possession by violence," from Latin invādere "to enter with hostile intent, assault, attack" + -tiōn-, -tiō, suffix of verbal action — more at invade

First Known Use

15th century, in the meaning defined at sense 1

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

Dictionary Entries Near invasion

Cite this Entry

“Invasion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/invasion. Accessed 19 Apr. 2024.

Kids Definition

invasion

noun
in·​va·​sion in-ˈvā-zhən How to pronounce invasion (audio)
: an act of invading
especially : entrance of an army into a country for conquest

Medical Definition

invasion

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

Legal Definition

invasion

noun
in·​va·​sion in-ˈvā-zhən How to pronounce invasion (audio)
: the act of or an instance of invading

More from Merriam-Webster on invasion

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