AskDefine | Define irruption

Dictionary Definition



1 a sudden violent entrance; a bursting in; "the recent irruption of bad manners"
2 a sudden sharp increase in the relative numbers of a population
3 a sudden violent spontaneous occurrence (usually of some undesirable condition); "the outbreak of hostilities" [syn: outbreak, eruption]

User Contributed Dictionary



From Latin irruptio


  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.


Extensive Definition

Irruptive growth, sometimes called Malthusian growth, is a growth pattern defined by population explosions and subsequent sharp population crashes, or diebacks. It is an extension of the Malthusian growth model and can occur when populations overshoot their carrying capacity, a phenomenon typically associated with r-strategists. Populations which exhibit irruptive growth do not stabilize around their carrying capacity, a feature of logistic growth and common to K-strategists.


  • The Global Environment

Synonyms, Antonyms and Related Words

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