intrusion

n. [ Cf. F. intrusion. See Intrude. ] [ 1913 Webster ]

1. The act of intruding, or of forcing in; especially, the forcing (one's self) into a place without right or welcome; encroachment. [ 1913 Webster ]

Why this intrusion?
Were not my orders that I should be private? Addison. [ 1913 Webster ]

2. (Geol.) The penetrating of one rock, while in a plastic or metal state, into the cavities of another. [ 1913 Webster ]

3. (Law) 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. [ 1913 Webster ]

4. (Scotch Ch.) The settlement of a minister over a congregation without their consent. [ 1913 Webster ]

a. Of or pertaining to intrusion. [ 1913 Webster ]