Possible Definitions:
1. Intrusion (n.) The act of intruding, or of forcing in; especially, the forcing (one's self) into a place without right or welcome; encroachment.
2. Intrusion (n.) The penetrating of one rock, while in a plastic or metal state, into the cavities of another.
3. Intrusion (n.) 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.
4. Intrusion (n.) The settlement of a minister over 3 congregation without their consent.
