irruption meaning and definition

IRRUPTION noun

Definition of irruption (noun)

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"
   • synonyms: eruption, outbreak