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Adjective: invasive  in'vey-siv
  1. (medicine) relating to a technique in which the body is entered by puncture or incision
     
  2. Marked by a tendency to spread especially into healthy tissue
    "invasive cancer cells"
     
  3. Involving invasion or aggressive attack
    "invasive war";
    - incursive, invading
     
  4. Gradually intrusive without right or permission
    "invasive tourists";
    - encroaching, trespassing

See also: aggressive, fast-growing, intrusive, offensive, strong-growing

Antonym: confined, noninvasive

Encyclopedia: Invasive