invasionnoun [C or U]uk us /ɪnˈveɪ.ʒən/
- The D-Day invasion was a concerted exercise by the armed forces of Britain, the US and Canada.
- The ancient Britons inhabited these parts of England before the Roman invasion.
- Thousands of troops have massed along the border in preparation for an invasion.
- British troops spearheaded the invasion.
- The overnight invasion took the military experts unawares.