RETROGRADATION

retrogradation. Retrogradation, n. the act of going backwards

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Re′tro‐gra‐da″tion (?), n. [[F. rétrogradation or L. retrogradatio. See Retrograde.]] 1. 1. The act of retrograding, or moving backward.
2. 2. The state of being retrograde; decline.