definition of
retrograde

[1] #1 retrograde v. move backward in an orbit, of celestial bodies. wn

[2] #2 retrograde a. moving from east to west on the celestial sphere; or--for planets--around the sun in a direction opposite to that of the Earth. wn

[3] #3 retrograde v. move in a direction contrary to the usual one; "retrograding planets". wn

[4] #4 retrograde a. of amnesia; affecting time immediately preceding trauma. wn

[5] #5 retrograde v. [retreat] move back; "The glacier retrogrades". wn