invasion
noun
in·va·sion
in-ˈvā-zhən 
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
There are no indications of a home invasion or anything like that, sources tell me, but the cops do believe more is going on than first assumed.
—
Dominic Patten, Deadline, 27 Feb. 2025
That sentiment was compounded earlier in the day when the U.S. joined Russia, North Korea and Belarus in opposing a United Nations resolution condemning the invasion.
—Joe Rubin, Sacramento Bee, 26 Feb. 2025
Three years since Russia launched its full-scale invasion of Ukraine, the United States and its European allies are sharply split over the war.
—Steve Inskeep, NPR, 25 Feb. 2025
On the third anniversary of Russia's invasion of Ukraine, Macron pleaded with Trump not to carry out a rushed deal to end the war by legitimizing Russia President Vladimir Putin's decision to invade.
—Anthony Robledo, USA TODAY, 25 Feb. 2025
See All Example Sentences for invasion
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Dominic Patten, Deadline, 27 Feb. 2025
That sentiment was compounded earlier in the day when the U.S. joined Russia, North Korea and Belarus in opposing a United Nations resolution condemning the invasion.
—Joe Rubin, Sacramento Bee, 26 Feb. 2025
Three years since Russia launched its full-scale invasion of Ukraine, the United States and its European allies are sharply split over the war.
—Steve Inskeep, NPR, 25 Feb. 2025
On the third anniversary of Russia's invasion of Ukraine, Macron pleaded with Trump not to carry out a rushed deal to end the war by legitimizing Russia President Vladimir Putin's decision to invade.
—Anthony Robledo, USA TODAY, 25 Feb. 2025
See All Example Sentences for invasion
Articles Related to invasion
Cite this Entry
“Invasion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/invasion. Accessed 2 Mar. 2025.
Copy CitationKids Definition
invasion
noun
in·va·sion
in-ˈvā-zhən
: an act of invading
especially
: entrance of an army into a country for conquest
Medical Definition
invasion
noun
in·va·sion
in-ˈvā-zhən
: 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
: the act of or an instance of invading
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