in·va·sion /ɪnˈveʒən/ 名詞
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.
Syn: -- Invasion, Irruption, Inroad.
Usage: Invasion is the generic term, denoting a forcible entrance into a foreign country. Incursion signifies a hasty and sudden invasion. Irruption denotes particularly violent invasion. Inroad is entry by some unusual way involving trespass and injury.
n 1: the act of invading; the act of an army that invades for
conquest or plunder
2: any entry into an area not previously occupied; "an invasion
of tourists"; "an invasion of locusts" [syn: encroachment,
3: (pathology) the spread of pathogenic microorganisms or
malignant cells to new sites in the body; "the tumor's
invasion of surrounding structures"