(anatomy) One of two openings transmitting nerves and blood vessels to or from the orbit, situated superiorly between the greater wing and the lesser wing of the sphenoid bone.

(astrodynamics) A nearly polar orbit in which a satellite passes over the surface of a planet maintaining the same local mean solar time.

(informal, often humorous) The referent of it is dangerous or undesirable and should be eliminated.

plural of sidereal orbital period

(aerospace) An elliptical orbit used to transfer between two circular orbits of different radii in the same plane.

plural of inner orbital complex

plural of Hohmann orbit

plural of beta orbiter

plural of graveyard orbit

plural of synchronous orbit