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Definition of irruption noun from the Oxford Advanced Learner's Dictionary

irruption

noun
 
/ɪˈrʌpʃn/
 
/ɪˈrʌpʃn/
[uncountable, countable] (formal)
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  1. the act of entering or appearing somewhere suddenly and with a lot of force
buttercup
noun
 
 
From the Topic
Plants and trees
C2
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