WordReference Random House Unabridged Dictionary of American English © 2026
ret•ro•gra•da•tion
(re′trō grā dā′shən),USA pronunciation n.
ret•ro•gra•da•to•ry
(re′trə grā′də tôr′ē, -tōr′ē),USA pronunciation adj.
- backward movement.
- decline or deterioration.
- Late Latin retrōgradātiōn- (stem of retrōgradātiō), probably equivalent. to Latin retrōgrad(us) retrograde + -ātiō -ation, as translation of Greek anapodismós
- 1545–55;
'retrogradation' also found in these entries (note: many are not synonyms or translations):