1. an act of invading a country or region with an armed force
2. an unwelcome intrusion into another’s domain
3. the arrival of a large number of people or things at the same time

Examples

• The invasion of Normandy was a turning point in World War II.
• The country prepared its defenses against the enemy invasion.
• She felt the constant phone calls were an invasion of her privacy.
• The invasion of tourists overwhelmed the small coastal town.
• The ant invasion in the kitchen required immediate action.
• Military experts studied the failed invasion attempt.
• The media invasion made it impossible for the family to grieve in peace.