1.To go into or upon; to pass within the confines of; to enter; used of forcible or rude ingress. (Obs.) "Which becomes a body, and doth then invade The state of life, out of the grisly shade."
2.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. "Such an enemy Is risen to invade us."
3.To attack; to infringe; to encroach on; to violate; as, the king invaded the rights of the people.
4.To grow or spread over; to affect injuriously and progressively; as, gangrene invades healthy tissue.
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