For Orbit we have terms and definitions in 2 topics. The topics are Explosives and Medical.

Orbit (Explosives)

Orbit, path in space described by a smaller body revolving around a second, larger body where the motion of the orbiting body is dominated by their mutual gravitational attraction ( Celestial Mechanics; Gravitation; Kepler’s Laws). The size and shape of an orbit are specified by
(1) the semimajor axis (a length equal to half the greatest diameter of the orbit) and
(2) the eccentricity (the distance of the larger body from the center of the orbit divided by the length of the orbit's semimajor axis). The position of the orbit in space is determined by three factors:
(3) the inclination, or tilt, of the orbital plane to the reference plane (the ECLIPTIC for sun-orbiting bodies; a planet's Equator for natural and artificial satellites);
(4) the longitude of the ascending Node (measured from the vernal Equinox to the point where the smaller body cuts the reference plane moving south to north); and
(5) the argument of pericenter (measured from the ascending node in the direction of motion to the point at which the two bodies are closest).
These five quantities, plus the time of pericenter passage, are called orbital elements. The gravitational attractions of bodies other than the larger body causes perturbations in the smaller body's motions that can make the orbit shift, or precess, in space or cause the smaller body to wobble slightly.

Orbit (Medical)

The socket in the skull that contains the eyeball, along with its blood vessels, nerves, and muscles

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