Irruption

Noun

 * 1) The action of irrupting or breaking into; a violent entry or invasion; an intrusion.
 * 2) An abrupt increase of numbers of a particular animal.

Thesaurus
air attack, air raid, air strike, blaze, boarding, burst, convulsion, cyclone, encroachment, entrance, entrenchment, eruption, escalade, explosion, fire raid, fit, flare-up, foray, gale, gust, hurricane, impingement, imposition, incursion, infiltration, influx, infringement, injection, inroad, insinuation, interference, interjection, interloping, interposition, interposure, interruption, intervention, intrusion, invasion, obtrusion, outbreak, outburst, paroxysm, raid, razzia, saturation raid, scaling, seizure, shuttle raid, spasm, storm, tempest, tornado, trespass, trespassing, unlawful entry, upheaval, whirlwind

Etymology
From irruptio:.

Translations

 * Catalan: irrupció


 * Spanish: irrupción

Anagrams

 * prurition

Noun

 * 1) outbreak (an eruption, sudden appearance)