Meaning of “invasion” in the English Dictionary

british dictionary

"invasion" in British English

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invasionnoun [ C or U ]

uk /ɪnˈveɪ.ʒən/ us /ɪnˈveɪ.ʒən/

B2 an occasion when an army or country uses force to enter and take control of another country:

They were planning to mount an invasion of the north of the country.

C2 an occasion when a large number of people or things come to a place in an annoying and unwanted way:

the annual invasion of foreign tourists

C2 an action or process that affects someone's life in an unpleasant and unwanted way:

an invasion of privacy

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(Definition of “invasion” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"invasion" in American English

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invasionnoun [ C ]

us /ɪnˈveɪ·ʒən/

the act of entering a place by force, often in large numbers:

the invasion of the Normandy coast on D-day
fig. I certainly regarded the tapping of my phone as an invasion of (my) privacy.

(Definition of “invasion” from the Cambridge Academic Content Dictionary © Cambridge University Press)