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English definition of “intrusion”

intrusion

noun [C or U]     /ɪnˈtruː.ʒən/
C2 an occasion when someone goes into a place or situation where they are not wanted or expected to be: They complained about excessive government intrusion (= unwanted involvement) into their legitimate activities. His phone call was a welcome intrusion into an otherwise tedious morning.Arriving, entering and invadingGetting involved for one's own benefit or against others' willTaking part and getting involved
(Definition of intrusion noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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