in·​tru·​sion | \ in-ˈtrü-zhən How to pronounce intrusion (audio) \

Definition of intrusion

1 : the act of intruding or the state of being intruded especially : the act of wrongfully entering upon, seizing, or taking possession of the property of another
2 : the forcible entry of molten rock or magma into or between other rock formations also : the intruded magma

Examples of intrusion in a Sentence

Recent Examples on the Web

Teams have grown increasingly resistant to being features on the show that runs weekly during training camp and the preseason because of intrusions. Carlos Monarrez, Detroit Free Press, "Detroit Lions have been told nothing about being on HBO's 'Hard Knocks'," 4 June 2019 Europeans care deeply about this issue, and have pushed back against Kremlin intrusions. Trudy Rubin,, "NATO allies fear Trump will kick them, hug Putin | Trudy Rubin," 6 July 2018 The Associated Press and the Los Angeles Times successfully challenged Superior Court Judge Gustavo Sztraicher's order as an unconstitutional intrusion on free speech. Christopher Weber, Fox News, "Judge reverses order barring court photos of murder suspect," 27 Sep. 2018 News media advocates consider the idea of mining a journalist’s records for sources to be an intrusion on First Amendment freedoms. Adam Goldmanand Nicholas Fandos And Katie Benner,, "Justice Dept. Seizes Times Reporter’s Email and Phone Records in Leak Investigation," 8 June 2018 As a willing and excited cook, flexing on my baked salmon recipes for whichever corporate overlords own my June video reel seems like a small intrusion. Megan Geuss, Ars Technica, "Review: The June oven made me want a camera in every cooking device," 22 Dec. 2018 With the two men who were deeply involved in the day-to-day running of Instagram now gone, such intrusions are expected to increase. Jon Porter, The Verge, "Instagram is testing the ability to share your precise location history with Facebook," 5 Oct. 2018 Parents came to pick up their children, with some saying the attacker’s brief intrusion into the school reminded them of a 2001 attack at an Osaka school in which eight children were killed and 15 others, including teachers, were injured. Washington Post, "Man kills policeman, guard in attacks near school in Japan," 26 June 2018 There are legislation intrusions in the examining room. Rebecca Hazen, Houston Chronicle, "Harris County Medical Society tackles physician stress," 18 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'intrusion.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of intrusion

15th century, in the meaning defined at sense 1

History and Etymology for intrusion

Middle English, from Anglo-French, from Medieval Latin intrusion-, intrusio, from Latin intrudere

Keep scrolling for more

Learn More about intrusion

Statistics for intrusion

Last Updated

10 Jun 2019

Look-up Popularity

Time Traveler for intrusion

The first known use of intrusion was in the 15th century

See more words from the same century

Keep scrolling for more

More Definitions for intrusion


in·​tru·​sion | \ in-ˈtrü-zhən How to pronounce intrusion (audio) \

Kids Definition of intrusion

1 : the act of going or forcing in without being wanted
2 : something that goes in or interferes without being wanted The phone call was an unwelcome intrusion.


in·​tru·​sion | \ in-ˈtrü-zhən How to pronounce intrusion (audio) \

Legal Definition of intrusion

1a : the entry at common law of a stranger after a particular estate of freehold is determined before the person who holds it in remainder or reversion has taken possession
b : the act of wrongfully entering upon, seizing, or taking possession of the property of another
2 : a trespassing on or encroachment upon something (as a right) the Fourth Amendment demands that the showing of justification match the degree of intrusionBerger v. New York, 388 U.S. 41 (1968)

Keep scrolling for more

More from Merriam-Webster on intrusion

Rhyming Dictionary: Words that rhyme with intrusion

Spanish Central: Translation of intrusion

Nglish: Translation of intrusion for Spanish Speakers

Britannica English: Translation of intrusion for Arabic Speakers

Comments on intrusion

What made you want to look up intrusion? Please tell us where you read or heard it (including the quote, if possible).


incapable of being surmounted or overcome

Get Word of the Day daily email!

Test Your Vocabulary

Finance Words Quiz

  • a-piggy-bank
  • The etymology of mortgage is related most closely to which two words?
Spell It

Can you spell these 10 commonly misspelled words?


Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!