1. A land or territory that is foreign, unfamiliar, or belonging to another country or group
The immigrant felt like a stranger in alien land.
O imigrante se sentia como um estranho em terra estrangeira.
2. In science fiction, a planet or world that belongs to extraterrestrial beings
The astronauts explored the alien land and discovered strange organisms.
Os astronautas exploraram a terra alienígena e descobriram organismos estranhos.