Intrusion /(?)/

In·tru·sion

Intrusion

n.
  1. The act of intruding, or of forcing in; especially, the forcing (one's self) into a place without right or welcome; encroachment.
    Why this intrusion? Were not my orders that I should be private?
  2. The penetrating of one rock, while in a plastic or metal state, into the cavities of another. (Geol.)
  3. 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. (Law)
  4. The settlement of a minister over a congregation without their consent. (Scotch Ch.)