irruption
noun
ir·rup·tion
i-ˈrəp-shən 
plural irruptions
: an act or instance of irrupting: such as
a
: a sudden, violent, or forcible entry : a rushing or bursting in
… the assassination still feels like a primal catastrophe—an irruption of inexplicable evil as horrifying as any supernatural bogeyman.—
Ross Douthat
Ross Douthat
b
: a sudden and violent invasion
… begins not with Hitler's attack on Poland, but with the Japanese irruption into Outer Mongolia in July 1939…—John Gooch
John Gooch
c
ecology
: a sudden sharp increase in the relative numbers of a natural population usually associated with favorable alteration of the environment
The owl's appearance came during an irruption, a huge southward migration of snowy owls from their arctic territories that, this year, followed a successful breeding period.—Scott Carroll
Scott CarrollExamples of irruption in a Sentence
the irruptions of the Goths into Italy in the fifth century
Recent Examples on the Web
But the irruption is an end of a lifetime for some of the owls.
—Dan Kraker, Twin Cities, 9 Feb. 2025
This is the largest owl irruption in Minnesota in two decades.
—Dan Kraker, Twin Cities, 9 Feb. 2025
An irruption is a sudden change in population density.
—San Diego Union-Tribune, 11 Feb. 2023
This irruption of violence dovetailed with the rise of the Ku Klux Klan, which began as a social club in Tennessee and then quickly metastasized into a band of white supremacist terrorists.
—Marc Weingarten, Los Angeles Times, 17 Jan. 2023
Data from recent years show a winter poor as this one was followed, two years later, by the biggest irruption in generations, according to Weidensaul.
—Paul A. Smith, Journal Sentinel, 13 Jan. 2023
The numbers are low for the middle of November, Brady said, and suggest an irruption, in which large numbers of owls move into Wisconsin and the U.S., is unlikely this year.
—Paul A. Smith, Milwaukee Journal Sentinel, 21 Nov. 2021
According to Rauch, the last irruption of snowy owls in the D.C. area was in 2014, when at least four were reported.
—Washington Post, 10 Jan. 2022
The reasons aren’t hard to imagine: the irruption of e-commerce and changes in consumer habits.
—Damian Scalerandi, Forbes, 8 Sep. 2021
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Dan Kraker, Twin Cities, 9 Feb. 2025
This is the largest owl irruption in Minnesota in two decades.
—Dan Kraker, Twin Cities, 9 Feb. 2025
An irruption is a sudden change in population density.
—San Diego Union-Tribune, 11 Feb. 2023
This irruption of violence dovetailed with the rise of the Ku Klux Klan, which began as a social club in Tennessee and then quickly metastasized into a band of white supremacist terrorists.
—Marc Weingarten, Los Angeles Times, 17 Jan. 2023
Data from recent years show a winter poor as this one was followed, two years later, by the biggest irruption in generations, according to Weidensaul.
—Paul A. Smith, Journal Sentinel, 13 Jan. 2023
The numbers are low for the middle of November, Brady said, and suggest an irruption, in which large numbers of owls move into Wisconsin and the U.S., is unlikely this year.
—Paul A. Smith, Milwaukee Journal Sentinel, 21 Nov. 2021
According to Rauch, the last irruption of snowy owls in the D.C. area was in 2014, when at least four were reported.
—Washington Post, 10 Jan. 2022
The reasons aren’t hard to imagine: the irruption of e-commerce and changes in consumer habits.
—Damian Scalerandi, Forbes, 8 Sep. 2021
Cite this Entry
“Irruption.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/irruption. Accessed 12 Mar. 2025.
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