moving or directed backward; retiring or retreating
inverse or reverse: said of order
going back or tending to go back to an earlier, esp. worse, condition; retrogressive
Obsolete opposed; contrary
Astron. moving in an orbit opposite to the usual orbital direction of similar celestial bodies, as opposite to the direction of the earth in its journey around the sun
Astrol. designating motion, real or apparent, on the celestial sphere in a direction from east to west
Music designating motion backward in a melody, specif. so as to begin with the last note and end with the first
Opposite to the usual order; inverted or reversed.
Reverting to an earlier or inferior condition.
Astronomy
a. Of or relating to the orbital revolution or axial rotation of a planetary or other celestial body that moves clockwise from east to west, in the direction opposite to most celestial bodies.
b. Of or relating to the brief, regularly occurring, apparently backward movement of a planetary body in its orbit as viewed against the fixed stars, caused by the differing orbital velocities of Earth and the body observed.