Definition of: orbit

(ôr′bit) noun
1. Astron. The path in space along which a celestial body moves about its center of attraction.
2. Anat. One of the two cavities of the skull containing the eyes.
3. Ornithol. The eyelid and skin surrounding the eye of a bird.
4. Physics The assumed path of an electron around the atomic nucleus.
5. A range of influence or action: the orbit of imperialism.
—v.t. To cause to move in an orbit, as an artificial satellite.
—v.i. To move in an orbit. [<L orbita track of a wheel, an orbit <orbis a wheel, a circle]
—or′bi·tal adjective