irruption

noun

A bursting in; a breaking or rushing into a place; a sudden invasion or incursion.

noun

Synonyms Foray, raid.

noun

A bursting in; a sudden, violent rushing into a place.

noun

A sudden and violent inroad, or entrance of invaders.

noun

The action of irrupting or breaking into; a violent entry or invasion; an inbreaking; an intrusion.

noun

An abrupt increase of numbers of a particular animal.

noun

a sudden violent spontaneous occurrence (usually of some undesirable condition)

noun

a sudden sharp increase in the relative numbers of a population

noun

a sudden violent entrance; a bursting in