intrusion

noun

in·​tru·​sion in-ˈtrü-zhən 

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

The most recent intrusion has reached us care of HPS Investment Partners. —John Tamny, Forbes, 9 Dec. 2024

The intrusion, however, gnawed at the thing, complicating and challenging it: What future, when this audience applauds the silencing of dissent? —Jackson McHenry, Vulture, 5 Dec. 2024

Recommendations The recommendations issued Tuesday for telecommunications companies focus on technical measures, emphasizing encryption, system centralization and continuous monitoring to guard against cyber intrusions. —Jason Fields, Newsweek, 5 Dec. 2024

The recall is due to the tailgate's electronic gate-release switch potentially short-circuiting due to water intrusion, which can result in the tailgate inadvertently unlatching while the vehicle is in park, according to the NHTSA recall notice. —Gabe Hauari, Detroit Free Press, 3 Dec. 2024

Word History

Etymology

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

First Known Use

15th century, in the meaning defined at sense 1

Phrases Containing intrusion

• anti-intrusion

Kids Definition

intrusion

noun

in·​tru·​sion in-ˈtrü-zhən 

1

: the act of intruding : the state of being intruded

2

: the entry by force of melted rock into or between other rock formations

Legal Definition

intrusion

noun

in·​tru·​sion in-ˈtrü-zhən 

1

a

: 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 intrusion

—Berger v. New York, 388 U.S. 41 (1968)