Ir‐rup″tion (?), n. [L. irruptio: cf. F. irruption. See Irrupted.]
1. A bursting in; a sudden, violent rushing into a place; as, irruptions of the sea.
Lest evil tidings, with too rude irruption
Hitting thy aged ear, should pierce too deep. Milton.
2. A sudden and violent inroad, or entrance of invaders; as, the irruptions of the Goths into Italy. Addison.
Syn. — Invasion; incursion; inroad. See Invasion.