- march aggressively into another's territory by military force for the purposes of conquest and occupation;
"Hitler invaded Poland on September 1, 1939"
- to intrude upon, infringe, encroach on, violate;
"This new colleague invades my territory" "The neighbors intrude on your privacy"
- occupy in large numbers or live on a host;
"the Kudzu plant infests much of the South and is spreading to the North"
- penetrate or assault, in a harmful or injurious way;
"The cancer had invaded her lungs"
