n. 1.the (usually elliptical) path described by one celestial body in its revolution about another 2.a particular environment or walk of life 3.an area in which something acts or operates or has power or control: "the range of a supersonic jet" 4.the path of an electron around the nucleus of an atom 5.the bony cavity in the skull containing the eyeball orbit v. 1.move in an orbit
