a circular orbit around the Earth having a period of 24 hours
of or having an orbit with a fixed period of 24 hours (although the position in the orbit may not be fixed with respect to the earth)
the (usually elliptical) path described by one celestial body in its revolution about another
move in an orbit
an area in which something acts or operates or has power or control: "the range of a supersonic jet"
a particular environment or walk of life
the bony cavity in the skull containing the eyeball
the path of an electron around the nucleus of an atom