Invasion
Invasion , noun
[Latin invasio: compare French invasion. See Invade.]
1.
The act of invading; the act of encroaching upon the rights or possessions of another; encroachment; trespass.
2.
A warlike or hostile entrance into the possessions or domains of another; the incursion of an army for conquest or plunder.
3.
The incoming or first attack of anything hurtful or pernicious; as, the invasion of a disease.