- to burst suddenly or violently (into)
- Ecol. to increase abruptly in size of population
Origin of irruptfrom Classical Latin irruptus, past participle of irrumpere, to break in: see in- and rupture
intransitive verbir·rupt·ed, ir·rupt·ing, ir·rupts
- To break or burst in: The boys irrupted into the kitchen.
- Ecology To increase rapidly in number, especially beyond the normal range: snowy owls that irrupted southward.
Origin of irruptLatin irrumpere irrupt- in- in ; see in- 2. rumpere to break ; see reup- in Indo-European roots.
(third-person singular simple present irrupts, present participle irrupting, simple past and past participle irrupted)
From Latin irrumpere.