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
Troops from China, which is Russia's closest trading partner but officially neutral on Vladimir Putin's full-scale invasion, would mark an escalation in the war.
—
Daniel R. Depetris, MSNBC Newsweek, 11 Apr. 2025
The Vikings brought Old Norse with their invasions and subsequent settlements, and the Normans introduced French to the British nobility as a lovely conquering gift after the conquest of 1066.
—Big Think, 10 Apr. 2025
King's son argued that the recordings, which include some made in the King family home, constitute an invasion of privacy.
—Jacob Rosen, CBS News, 10 Apr. 2025
The former ballerina’s arrest and conviction came amid a spike in Russian detainments of American citizens following the country’s invasion of Ukraine in February 2022, according to the AP.
—Sean Neumann, People.com, 10 Apr. 2025
See All Example Sentences for invasion
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Daniel R. Depetris, MSNBC Newsweek, 11 Apr. 2025
The Vikings brought Old Norse with their invasions and subsequent settlements, and the Normans introduced French to the British nobility as a lovely conquering gift after the conquest of 1066.
—Big Think, 10 Apr. 2025
King's son argued that the recordings, which include some made in the King family home, constitute an invasion of privacy.
—Jacob Rosen, CBS News, 10 Apr. 2025
The former ballerina’s arrest and conviction came amid a spike in Russian detainments of American citizens following the country’s invasion of Ukraine in February 2022, according to the AP.
—Sean Neumann, People.com, 10 Apr. 2025
See All Example Sentences for invasion
Cite this Entry
“Invasion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/invasion. Accessed 18 Apr. 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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