in·va·sion / inˈvāzhən/ • n. an instance of invading a country or region with an armed force: the Soviet invasion of Czechoslovakia | in 1546 England had to be defended from invasion. ∎  an incursion by a large number of people or things into a place or sphere of activity: stadium guards are preparing for another invasion of fans. ∎  an unwelcome intrusion into another's domain: random drug testing of employees is an unwarranted invasion of privacy. ∎  the infestation of a body by harmful organisms: a bacterial invasion.

Invasion ★★½ 1965

A hospital opens its doors to an accident victim, and his attractive female visitors don't seem sympathetic to the idea of a long hospital stay. Turns out he's an escaped alien prisoner, and the alien babes, intent on intergalactic extradition, place a force field around the hospital and demand his return. Early effort of director Bridges, who later did “The Shooting Party.” Interesting, creepy, atmospheric, with very cool camera moves. 82m/B VHS . GB Edward Judd, Yoko Tani, Valerie Gearon, Lyndon Brook, Tsai Chin, Barrie Ingham; D: Alan Bridges.

invasion (in-vay-zhŏn) n.
1. the onset of a disease.

2. the entry of bacteria into the body.

3. the destruction of healthy tissue by a malignant tumour.