Meaning of intrusive

in•tru•sive

Pronunciation: (in-tr'siv), [key]
— adj.
  1. tending or apt to intrude; coming without invitation or welcome: intrusive memories of a lost love.
  2. characterized by or involving intrusion.
  3. intruding; thrusting in.
    1. (of a rock) having been forced between preexisting rocks or rock layers while in a molten or plastic condition.
    2. noting or pertaining to plutonic rocks.
  4. excrescent (def. 2).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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