- to enter forcefully as an enemy; go into with hostile intent: Germany invaded Poland in 1939.
- to enter like an enemy: Locusts invaded the fields.
- to enter as if to take possession: to invade a neighbor's home.
- to enter and affect injuriously or destructively, as disease: viruses that invade the bloodstream.
- to intrude upon: to invade the privacy of a family.
- to encroach or infringe upon: to invade the rights of citizens.
- to permeate: The smell of baking invades the house.
- to penetrate; spread into or over: The population boom has caused city dwellers to invade the suburbs.
- to make an invasion: troops awaiting the signal to invade.
- to enter (a country, territory, etc) by military force
- to occupy in large numbers; overrun; infest
- to trespass or encroach upon (privacy, etc)
- to enter and spread throughout, esp harmfully; pervade
- (of plants, esp weeds) to become established in (a place to which they are not native)
