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Synonyms

intrusion

American  
[in-troo-zhuhn] / ɪnˈtru ʒən /

noun

  1. an act or instance of intruding.

  2. the state of being intruded.

  3. Law.

    1. an illegal act of entering, seizing, or taking possession of another's property.

    2. a wrongful entry after the determination of a particular estate, made before the remainderman or reversioner has entered.

  4. Geology.

    1. emplacement of molten rock in preexisting rock.

    2. plutonic rock emplaced in this manner.

    3. a process analogous to magmatic intrusion, as the injection of a plug of salt into sedimentary rocks.

    4. the matter forced in.


intrusion British  
/ ɪnˈtruːʒən /

noun

  1. the act or an instance of intruding; an unwelcome visit, interjection, etc

    an intrusion on one's privacy

    1. the movement of magma from within the earth's crust into spaces in the overlying strata to form igneous rock

    2. any igneous rock formed in this way

  2. property law an unlawful entry onto land by a stranger after determination of a particular estate of freehold and before the remainderman or reversioner has made entry

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

intrusion Scientific  
/ ĭn-tro̅o̅zhən /
  1. The movement of magma through cracks in underground rocks within the Earth, usually in an upward direction.

  2. ◆ Rocks that form from the underground cooling of magma are generally coarse-grained (because they cool slowly so that large crystals have time to grow) and are called intrusive rocks.

  3. Compare extrusion


Other Word Forms

  • intrusional adjective

Etymology

Origin of intrusion

1250–1300; Middle English < Medieval Latin intrūsiōn- (stem of intrūsiō ), equivalent to Latin intrūs ( us ), past participle of intrūdere to intrude (equivalent to intrūd- verb stem + -tus past participle suffix, with dt < s ) + -iōn- -ion

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.

That’s commonly near the center of the office floor, far from windows and close to permanent shear walls that limit sound intrusion.

From Los Angeles Times

“Well, I suppose I should be upset by the intrusion. Then again, it didn’t feel much like an intrusion. I simply talked and the stranger listened. An ideal arrangement, in my books.”

From Literature

Pregnancy for Hedda is as distasteful a matter as these in-law intrusions, but it’s clear that George didn’t spend his entire honeymoon in the library and that the marriage plot has got ahead of her.

From Los Angeles Times

However, concerns over those intrusions "escalated significantly" following the discovery of the threatening graffiti.

From BBC

“Restoration is the name of the game, not intrusion,” Mike told me, and he wasn’t talking just about the estuary.

From Los Angeles Times