Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Of, engaging in, or given to armed aggression: an invasive military force.
  • adj. Marked by the tendency to spread, especially into healthy tissue: an invasive carcinoma.
  • adj. Of or relating to a medical procedure in which a part of the body is entered, as by puncture or incision.
  • adj. Tending to intrude or encroach, as upon privacy.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. that invades a foreign country using military force
  • adj. that invades a habitat to the detriment of native species
  • adj. (of a carcinoma etc) that invades healthy tissue; (of a procedure) in which part of the body is entered
  • adj. intruding on one's privacy, or trespassing
  • n. An invasive organism, as, a plant or animal.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Tending to invade; characterized by invasion; aggressive.
  • adj. tending to spread, especially tending to intrude into healthy tissue; -- used mostly of tumors.

from The Century Dictionary and Cyclopedia

  • Tending to invade; characterized by invasion; aggressive.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. marked by a tendency to spread especially into healthy tissue
  • adj. gradually intrusive without right or permission
  • adj. involving invasion or aggressive attack
  • adj. relating to a technique in which the body is entered by puncture or incision

Etymologies

Middle English, from Old French invasif, from Medieval Latin invāsīvus, from Latin invāsus, past participle of invādere, to invade; see invade.
(American Heritage® Dictionary of the English Language, Fourth Edition)

Examples

  • The catch is, is that the term invasive is often used not too discriminately.

    NPR Topics: News

  • Currently, in the United States and in most parts of the world, the term invasive is supposed to be used - or is typically used to refer to a non-native species that is causing harm of some sort.

    NPR Topics: News

  • Alaska state rep objects to airport search demand An Alaska state lawmaker is making her way back to the state capital of Juneau after refusing what she called an invasive pat-down search at a Seattle airport.

    The Seattle Times

  • JUNEAU, Alaska - An Alaska state lawmaker is making her way back to the state capital of Juneau after refusing what she called an invasive pat-down search at a Seattle airport.

    Yahoo! News: Business - Opinion

  • An Alaska state lawmaker is making her way back to the state capital of Juneau after refusing what she called an invasive pat-down search at a Seattle airport.

    The Seattle Times

  • For several years, the Captive Motion Picture Audience of America CMPAA has devoted itself to eliminating what it calls the "invasive" advertising techniques used by movie theaters, which it claims takes away from what going to the movies should be all about.

    FOXNews.com

  • JUNEAU, Alaska - An Alaska state lawmaker is making her way back to the state capital of Juneau after refusing what she called an invasive...

    The Full Feed from HuffingtonPost.com

  • Since being medically castrated, what he describes as his invasive fantasies have evaporated - that plus the rigorous assessment regimen he's gone through.

    A Very Public Sociologist

  • Other regions, such as the Southeast, West, and southern Great Plains may face challenges from increased temperatures, water stress, saltwater intrusion, and the potential increase in invasive species and pests — the impacts of which may cause costs to outweigh benefits.

    Wonk Room » Global Boiling: A Stormy Forecast For Agriculture

  • It's the federal government mandating an unnecessary medical procedure that is the definition of invasive.

    HUFFPOST HILL - CBO Shocker: American Jobs Act *Won't* Ruthlessly Exterminate Small Woodland Creatures

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