n. 1 backward or reversed movement. 2 a return to a less advanced state; a reversal of development; a decline or deterioration. 3 Astron. = RETROGRADATION. retrogressive adj.
[ RETRO-, after progression ]
RETROGRESSION
Meaning of RETROGRESSION in English
Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012