Astronomy a natural body that revolves around a planet; a moon.
a country under the domination or influence of another.
something, as a branch office or an off-campus facility of a university, that depends on, accompanies, or serves something else.
an attendant or follower of another person, often subservient or obsequious in manner.
a device designed to be launched into orbit around the earth, another planet, the sun, etc.