invasion

Meaning

Noun

• 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.
• The entry without consent of an individual or group into an area where they are not wanted.
• The spread of cancer cells, bacteries and such to the organism.
• The breaching of the skin barrier.

Origin

• From Middle French invasion, from Late Latin invāsiōnem, accusative of invāsiō.