Synonyms for invasion

Noun

1. invasion, penetration, incursion

usage: the act of invading; the act of an army that invades for conquest or plunder

2. invasion, encroachment, intrusion, entrance, entering

usage: any entry into an area not previously occupied; "an invasion of tourists"; "an invasion of locusts"

3. invasion, spread, spreading

usage: (pathology) the spread of pathogenic microorganisms or malignant cells to new sites in the body; "the tumor's invasion of surrounding structures"