intrusive: Meaning and Definition of

in•tru•sive

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.
5. excrescent (def. 2).