To go into or upon; to pass within the confines of; to enter; -- used of forcible or rude ingress.
- To enter by force in order to conquer or pillage.
- To encroach or intrude on; violate: "The principal of the trusts could not be invaded without trustee approval” ( Barbara Goldsmith).
- To overrun as if by invading; infest: "About 1917 the shipworm invaded the harbor of San Francisco” ( Rachel Carson).
- To enter and permeate, especially harmfully.
- To make an invasion: "The X-rays showed that the cancer, which had invaded deeply into the chest cavity, was retreating” ( Zach Rosen).