RETROGRADATION
Meaning of RETROGRADATION in English
n.
Pronunciation: ˌ re-tr ō -gr ā - ' d ā -sh ə n, -gr ə -
Function: noun
Date: circa 1545
: the action or process of retrograding
Merriam Webster Collegiate English Dictionary.
Merriam Webster - Энциклопедический словарь английского языка.
2012