intrusion
an act or instance of intruding.
the state of being intruded.
Law.
an illegal act of entering, seizing, or taking possession of another's property.
a wrongful entry after the determination of a particular estate, made before the remainderman or reversioner has entered.
Geology.
emplacement of molten rock in preexisting rock.
plutonic rock emplaced in this manner.
a process analogous to magmatic intrusion, as the injection of a plug of salt into sedimentary rocks.
the matter forced in.
Origin of intrusion
1Other words from intrusion
- in·tru·sion·al, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use intrusion in a sentence
Aside from reaching an international audience, leaving Oz had another benefit—no more silly intrusions into her privacy.
When she finally got around to doing it, the intrusions started soon after.
Critics of Israel will see the blue islands as Israeli intrusions into Palestine.
Con Ed will have to deal with widespread intrusions into the duct banks and transformers that lie below the city streets.
How Long Until New York Gets Back Up and Running? | Megan McArdle | October 30, 2012 | THE DAILY BEASTWe want to ensure our ability to cripple criminal activity while preventing intrusions into our personal privacy.
Chief among them was the putting an end to the intrusions of the outside claimants to Narragansett.
A short history of Rhode Island | George Washington GreeneThe tertiary formation is followed by an azoic formation of gneiss, mica slate, and phylada with large intrusions of granite.
Guatemala, the country of the future | Charles M. PepperI am not a coward—far from it—but I confess that such intrusions at the last minute are always disconcerting.
The Extraordinary Adventures of Arsene Lupin, Gentleman-Burglar | Maurice LeblancThese intrusions upon the Indian territory were, however, conformable to the grants of the proprietors, the Indians.
Great Events in the History of North and South America | Charles A. GoodrichBut that is a confusion of thought, for these tyrannies are merely intrusions of the eighteenth century upon the twentieth.
A Preface to Politics | Walter Lippmann
British Dictionary definitions for intrusion
/ (ɪnˈtruːʒən) /
the act or an instance of intruding; an unwelcome visit, interjection, etc: an intrusion on one's privacy
the movement of magma from within the earth's crust into spaces in the overlying strata to form igneous rock
any igneous rock formed in this way
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
Derived forms of intrusion
- intrusional, adjective
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
Scientific definitions for intrusion
[ ĭn-trōō′zhən ]
The movement of magma through cracks in underground rocks within the Earth, usually in an upward direction.♦ 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. Compare extrusion.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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