Search Result for "irruption": 
Wordnet 3.0

NOUN (3)

1. a sudden violent entrance; a bursting in;
- Example: "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);
- Example: "the outbreak of hostilities"
[syn: outbreak, eruption, irruption]



The Collaborative International Dictionary of English v.0.48:

Irruption \Ir*rup"tion\, n. [L. irruptio: cf. F. irruption. See
   Irrupted.]
   [1913 Webster]
   1. A bursting in; a sudden, violent rushing into a place; as,
      irruptions of the sea.
      [1913 Webster]

            Lest evil tidings, with too rude irruption
            Hitting thy aged ear, should pierce too deep.
                                                  --Milton.
      [1913 Webster]

   2. A sudden and violent inroad, or entrance of invaders; as,
      the irruptions of the Goths into Italy. --Addison.

   Syn: Invasion; incursion; inroad. See Invasion.
        [1913 Webster]


WordNet (r) 3.0 (2006):

irruption
    n 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, irruption]