march aggressively into anothers territory by military force for the purposes of conquest and occupation; Hitler invaded Poland on September 1, 1939

[ Syn: occupy ]

to intrude upon, infringe, encroach on, violate; This new colleague invades my territory; The neighbors intrude on your privacy

[ Syn: intrude on , obtrude upon , encroach upon ]

occupy in large numbers or live on a host; the Kudzu plant infests much of the South and is spreading to the North

[ Syn: overrun , infest ]

penetrate or assault, in a harmful or injurious way; The cancer had invaded her lungs'