- (v.t.) To attack; to infringe; to encroach on; to violate; as, the king invaded the rights of the people.
- (v.t.) To grow or spread over; to affect injuriously and progressively; as, gangrene invades healthy tissue.
- (v.t.) To enter with hostile intentions; to enter with a view to conquest or plunder; to make an irruption into; to attack; as, the Romans invaded Great Britain.
- (v.i.) To make an invasion.
- (v.t.) To go into or upon; to pass within the confines of; to enter; -- used of forcible or rude ingress.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). invade. Retrieved September 20, 2026, from http://smartdefine.org/invade/definitions/2023363 |
| Chicago | Webster's. 2011. "invade" http://smartdefine.org/invade/definitions/2023363 (accessed September 20, 2026). |
| Harvard | Webster's 2011, invade, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/invade/definitions/2023363>. |
| MLA | Webster's. "invade" 27 May 2011. Web. 20 September 2026. <http://smartdefine.org/invade/definitions/2023363> |