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
The previous talks on May 16 in the same Turkish city were the first direct peace negotiations since the early weeks of Moscow's 2022 invasion.
—
Arkansas Online, 3 June 2025
Moscow has used long-range bombers and their cruise missile armaments to attack Ukrainian cities throughout the full-scale invasion.
—David Brennan, ABC News, 2 June 2025
The previous talks on May 16 in the same Turkish city were the first direct peace negotiations since the early weeks of Moscow’s 2022 invasion.
—Mehmet Guzel, Chicago Tribune, 2 June 2025
For example, President Biden used IEEPA to impose sweeping sanctions on Russia within hours of its 2022 invasion of Ukraine.
—Jill Goldenziel, Forbes.com, 1 June 2025
See All Example Sentences for invasion
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Arkansas Online, 3 June 2025
Moscow has used long-range bombers and their cruise missile armaments to attack Ukrainian cities throughout the full-scale invasion.
—David Brennan, ABC News, 2 June 2025
The previous talks on May 16 in the same Turkish city were the first direct peace negotiations since the early weeks of Moscow’s 2022 invasion.
—Mehmet Guzel, Chicago Tribune, 2 June 2025
For example, President Biden used IEEPA to impose sweeping sanctions on Russia within hours of its 2022 invasion of Ukraine.
—Jill Goldenziel, Forbes.com, 1 June 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 6 Jun. 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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