invasion
US /ɪnˈveɪ.ʒən/
UK /ɪnˈveɪ.ʒən/
1.
an instance of a large number of people or things arriving somewhere unwelcomely
:
•
The town experienced an invasion of tourists during the festival.
•
We need to prevent the invasion of pests in our garden.
2.
an act or instance of invading a country or region with an armed force
:
•
The country prepared for a possible military invasion.
•
The historical records detail the invasion and subsequent occupation.