What does intrusion mean?

Definitions for intrusion
ɪnˈtru ʒənin·tru·sion

Here are all the possible meanings and translations of the word intrusion.

Princeton's WordNet

  1. invasion, encroachment, intrusionnoun

    any entry into an area not previously occupied

    "an invasion of tourists"; "an invasion of locusts"

  2. intrusionnoun

    entrance by force or without permission or welcome

  3. intrusionnoun

    the forcing of molten rock into fissures or between strata of an earlier rock formation

  4. intrusionnoun

    rock produced by an intrusive process

  5. trespass, encroachment, violation, intrusion, usurpationnoun

    entry to another's property without right or permission


  1. intrusionnoun

    The forcible inclusion or entry of an external group or individual; the act of intruding.

    He viewed sales calls as an unwelcome intrusion.

Webster Dictionary

  1. Intrusionnoun

    the act of intruding, or of forcing in; especially, the forcing (one's self) into a place without right or welcome; encroachment

    Etymology: [Cf. F. intrusion. See Intrude.]

  2. Intrusionnoun

    the penetrating of one rock, while in a plastic or metal state, into the cavities of another

    Etymology: [Cf. F. intrusion. See Intrude.]

  3. Intrusionnoun

    the entry of a stranger, after a particular estate or freehold is determined, before the person who holds in remainder or reversion has taken possession

    Etymology: [Cf. F. intrusion. See Intrude.]

  4. Intrusionnoun

    the settlement of a minister over 3 congregation without their consent

    Etymology: [Cf. F. intrusion. See Intrude.]


  1. Intrusion

    An intrusion is liquid rock that forms under Earth's surface. Magma from under the surface is slowly pushed up from deep within the earth into any cracks or spaces it can find, sometimes pushing existing country rock out of the way, a process that can take millions of years. As the rock slowly cools into a solid, the different parts of the magma crystallize into minerals. Many mountain ranges, such as the Sierra Nevada in California, are formed mostly by intrusive rock, large granite formations. Intrusions are one of the two ways igneous rock can form; the other is extrusive, that is, a volcanic eruption or similar event. Technically speaking, an intrusion is any formation of intrusive igneous rock; rock formed from magma that cools and solidifies within the crust of the planet. In contrast, an extrusion consists of extrusive rock; rock formed above the surface of the crust. Intrusions vary widely, from mountain-range-sized batholiths to thin veinlike fracture fillings of aplite or pegmatite. When exposed by erosion, these cores called batholiths may occupy huge areas of Earth's surface. Large bodies of magma that solidify underground before they reach the surface of the crust are called plutons.

Dictionary of Military and Associated Terms

  1. intrusion

    Movement of a unit or force within another nation

How to pronounce intrusion?

How to say intrusion in sign language?


  1. Chaldean Numerology

    The numerical value of intrusion in Chaldean Numerology is: 7

  2. Pythagorean Numerology

    The numerical value of intrusion in Pythagorean Numerology is: 4

Examples of intrusion in a Sentence

  1. Katherine Archuleta:

    In an average month, OPM, for example thwarts 10 million confirmed intrusion attempts targeting our network. These attacks will not stop - if anything, they will increase.

  2. Mindy Morris:

    We try to keep it low sound, low lights, so that it is as close to the womb as we can get, we try to minimize the intrusion to them.

  3. James Comey:

    We're talking about a foreign government that, using technical intrusion, lots of other methods, tried to shape the way we think, we vote, we act. That is a big deal. And people need to recognize it.

  4. The EA spokesperson:

    We are investigating a recent incident of intrusion into our network where a limited amount of game source code and related tools were stolen, no player data was accessed, and we have no reason to believe there is any risk to player privacy. Following the incident, we've already made security improvements and do not expect an impact on our games or our business. We are actively working with law enforcement officials and other experts as part of this ongoing criminal investigation.

  5. Prince Edward:

    Listen, weirdly we've all been there before -- we've all had excessive intrusion and attention in our lives. And we've all dealt with it in slightly different ways, and listen, we wish them the very best of luck. It's a really hard decision.

Images & Illustrations of intrusion

  1. intrusionintrusionintrusionintrusionintrusion

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Translations for intrusion

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    dark brown mustelid of woodlands of Eurasia that gives off an unpleasant odor when threatened
    • A. arbalist
    • B. sundog
    • C. foumart
    • D. slur

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