The action of intervening; interfering in some course of events.
An orchestrated attempt to convince somebody with an addiction or other psychological problem to seek professional help and/or change their behavior.
An action taken or procedure performed; an operation.
A legal motion through which a person or entity who has not been named as a party to a case seeks to have the court order that they be made a party.
The forcible inclusion or entry of an external group or individual; the act of intruding.
The insertion of a phoneme into the pronunciation of a word despite its absence from the spelling. (e.g. intrusive r)
A structure that lies within a historic district but is nonhistoric and irrelevant to the district.
Magma forced into other rock formations; the rock formed when such magma solidifies.