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
What is there in this deal that can realistically stop a third Russian invasion?
—
Stuart Anderson, Forbes.com, 27 Apr. 2025
Beijing knows a full-scale invasion would risk direct war with the U.S., a destructive gamble for China’s already wobbly economy at a time when Trump has added 145% tariffs to its burdens.
—Ian Bremmer, Time, 26 Apr. 2025
While negotiations about ending the Russian invasion of Ukraine have been in fits and starts, a second meeting between Trump and Zelensky was scheduled for Saturday.
—Rosemary Feitelberg, Footwear News, 26 Apr. 2025
Their first match was a friendly at Leigh RMI, 15 miles out of Manchester, on July 16, 2005, featuring zero goals, three streakers and a pitch invasion at the final whistle.
—Daniel Taylor, New York Times, 25 Apr. 2025
See All Example Sentences for invasion
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Stuart Anderson, Forbes.com, 27 Apr. 2025
Beijing knows a full-scale invasion would risk direct war with the U.S., a destructive gamble for China’s already wobbly economy at a time when Trump has added 145% tariffs to its burdens.
—Ian Bremmer, Time, 26 Apr. 2025
While negotiations about ending the Russian invasion of Ukraine have been in fits and starts, a second meeting between Trump and Zelensky was scheduled for Saturday.
—Rosemary Feitelberg, Footwear News, 26 Apr. 2025
Their first match was a friendly at Leigh RMI, 15 miles out of Manchester, on July 16, 2005, featuring zero goals, three streakers and a pitch invasion at the final whistle.
—Daniel Taylor, New York Times, 25 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 2 May. 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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