B2 [I or T] to enter a country by force with large numbers of soldiers in order to take possession of it: Concentrations of troops near the border look set to invade within the next few days.Attacking and invading C1 [I or T] to enter a place in large numbers, usually when unwanted and in order to take possession or do damage: Hundreds of squatters have invaded waste land in the hope that they will be allowed to stay.Arriving, entering and invading › [T] to enter an area of activity in a forceful and noticeable way: Maria looks set to invade the music scene with her style and image.Taking part and getting involvedGetting involved for one's own benefit or against others' will C2 [T] to spoil a situation or quality for another person without thinking about their feelings: Famous people often find their privacy is invaded by the press.Damaging and spoilingDestroying and demolishing