incursion
Americannoun
-
a sudden invasion, attack, or raid
-
the act of running or leaking into; penetration
Other Word Forms
Derived Forms
Inflected Forms
Nouns
Etymology
Origin of incursion
1400–50; late Middle English < Latin incursiōn- (stem of incursiō ) raid, equivalent to incurs ( us ) (past participle of incurrere to incur ) + -iōn- -ion; see excursion
Explanation
When an army crosses a border into another country for battle, they are making an incursion into enemy territory. An incursion is an invasion as well as an attack. Incursion can also be used to describe other things that rush in like an army such as an invasive species into a new region or floodwaters entering your home. When an airplane heads onto a runway it is not supposed to land on, risking airport safety, it is known as a runway incursion. And an incursion of cold air could make September feel like December.
Vocabulary lists containing incursion
Lord of the Flies
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The Son of Neptune
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Texas v. Johnson (1989)
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
See Examples For:
That incursion of private-label brands can be felt across the consumer-goods landscape.
From MarketWatch ● Sep. 16, 2026
There had initially been concerns about the threat from the drone incursion when he was in Chisinau.
From BBC ● Sep. 10, 2026
"We've been campaigning on planning issues and... the incursion of the city on the East End for quite a number of years," said Jonathan Moberly, who is leading local opposition.
From Barron's ● Sep. 8, 2026
Their size corresponds to small arrowheads, which are directly comparable to those produced by Homo sapiens during an incursion into Neanderthal territory in the Rhône Valley, 25,000 years later.
From Science Daily ● Sep. 6, 2026
This was his first incursion into management circles.
From "The God of Small Things" by Arundhati Roy
It was an era of climate change, supply chain collapse, earthquakes, famine, disease, migration, drought and armed incursions and invasions.
From Salon ● Oct. 30, 2026
Protesters rallied in several locations including Damascus and central Syria's Homs, decrying Israeli incursions and attacks in the southern Quneitra and Daraa provinces, state media reported.
From Barron's ● Oct. 23, 2026
Hackers using a Chinese AI tool attacked South Korea’s biggest banks and stole the personal information of 68,000 people, showcasing the danger AI agent incursions could pose to the global financial system.
From The Wall Street Journal ● Oct. 6, 2026
Military drone incursions have become increasingly common across Europe since the beginning of Russia's full-scale of invasion of Ukraine.
From BBC ● Sep. 15, 2026
His successful predictions included rebellious activity by the peasants in Styria, incursions into Austria by the Turks in the east and a cold winter.
From "The Scientists" by John Gribbin
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Get a wordDefinitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
