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English to English noun
| 1 |
a sudden violent entrance; a bursting in |  | Example: the recent irruption of bad manners
source: wordnet30
| 2 |
a sudden sharp increase in the relative numbers of a population | | source: wordnet30
| 3 |
a sudden violent spontaneous occurrence (usually of some undesirable condition) | | Example: the outbreak of hostilities
source: wordnet30
| 4 |
A bursting in; a sudden, violent rushing into a place; as, irruptions of the sea. | | source: webster1913
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