- The definition of an invasion is the entering or taking over of a place, or being entered by force.
- An example of an invasion is a military attack on a town.
- An example of an invasion is the infestation of a bug on a crop.
- An example of an invasion is the spread of a virus.
an invading or being invaded; specif.,
- an entering or being entered by an attacking military force
- an intrusion or infringement
- the onset, appearance, or spread of something
Origin of invasionMiddle French ; from Late Latin invasio ; from Classical Latin invasus, past participle of invadere
- The act of invading, especially the entrance of an armed force into a territory to conquer.
- The entry into bodily tissue and subsequent proliferation of an injurious entity, such as a pathogen or tumor.
- An intrusion or encroachment: Your reading her diary was an invasion of her privacy.
Origin of invasionMiddle English invasioun, from Old French invasion, from Late Latin invāsiō, invāsiōn-, from invāsus, past participle of invādere, to invade; see invade.
- A military action consisting of armed forces of one geopolitical entity entering territory controlled by another such entity, generally with the objective of conquering territory or altering the established government.
- (figuratively) The entry of a large group into a new area.
- an invasion of mobile phones
- an invasion of bees
- an invasion of foreign tourists