pasrow (#), pasraft (#)
Moving backward; having a backward motion or direction. → retrograde motion.
M.E., from L. retrogradus "going backward," from retrogradi "move backward," from retro- "backward" + gradi "to go, step."
Pasrow, pasraft, from pas- "back, behind," → back, + row, raft present and past stems of raftan "to go, walk;" (Mid.Pers. raftan, raw-, Proto-Iranian *rab/f- "to go; to attack").
Fr.: mouvement rétrograde
The orbital motion or rotation of a solar system body in a clockwise direction (East to West) when viewed from the north pole of the ecliptic. It is a motion opposed to the → direct motion of the great majority of solar system bodies.
Fr.: objet rétrograde
An object which has a retrograde orbit around its primary.
Fr.: orbite rétrograde
An orbit with an inclination between 90° and 270° such as those of some comets and small asteroids orbiting the Sun.