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 film’s plot effectively transformed the United States from the aggressor in its attempts to thwart the regimes in Cuba and Nicaragua into the victim of an utterly implausible military invasion and occupation by those very same regimes.
—
TIME, 9 Aug. 2024
Marianne, the oldest child, had reached England shortly before the German invasion of Poland.
—Alex Ross, The New Yorker, 9 Aug. 2024
Healthy milkweed plants can withstand an invasion of aphids.
—Lauren Landers, Better Homes & Gardens, 8 Aug. 2024
Pelosi has been speaking with media this week promoting her new book, The Art of Power, which covers her political career and offers her perspective on the COVID-19 pandemic, the Jan. 6, 2021, insurrection, and the distressing home invasion that took place in her San Francisco home back in 2022.
—Athena Sobhan, Peoplemag, 8 Aug. 2024
See all Example Sentences for invasion 
TIME, 9 Aug. 2024
Marianne, the oldest child, had reached England shortly before the German invasion of Poland.
—Alex Ross, The New Yorker, 9 Aug. 2024
Healthy milkweed plants can withstand an invasion of aphids.
—Lauren Landers, Better Homes & Gardens, 8 Aug. 2024
Pelosi has been speaking with media this week promoting her new book, The Art of Power, which covers her political career and offers her perspective on the COVID-19 pandemic, the Jan. 6, 2021, insurrection, and the distressing home invasion that took place in her San Francisco home back in 2022.
—Athena Sobhan, Peoplemag, 8 Aug. 2024
See all Example Sentences for invasion
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.
Dictionary Entries Near invasion
Cite this Entry
“Invasion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/invasion. Accessed 19 Aug. 2024.
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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