an act or instance of intruding.

the state of being intruded.

Law .

an illegal act of entering, seizing, or taking possession of another's property.

a wrongful entry after the determination of a particular estate, made before the remainderman or reversioner has entered.

Geology .

emplacement of molten rock in preexisting rock.

plutonic rock emplaced in this manner.

a process analogous to magmatic intrusion, as the injection of a plug of salt into sedimentary rocks.

the matter forced in.

noun

forced entrance , trespass , intervention , interposition , meddling , obtrusion , encroachment , invasion , incursion , inroad , infraction , overrunning , overstepping , impingement , imposition , transgression , interference , entrenchment , infringement , infliction