irruption

[ ih-ruhp-shuh n ]
/ ɪˈrʌp ʃən /

noun

a breaking or bursting in; a violent incursion or invasion.
Ecology. a sudden increase in an animal population.

RELATED WORDS

Origin of irruption

1570–80; < Latin irruptiōn- (stem of irruptiō), equivalent to irrupt(us), past participle of irrumpere to burst into (see ir-1, rupture) + -iōn- -ion

Can be confused

eruption irruption
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for irruption

Medicine definitions for irruption

irruption

[ ĭ-rŭpshən ]

n.

The act or process of breaking through to a surface.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.