retrogradation

[ re-troh-grey-dey-shuh n ]
/ ˌrɛ troʊ greɪˈdeɪ ʃən /

noun

backward movement.
decline or deterioration.

Origin of retrogradation

1545–55; < Late Latin retrōgradātiōn- (stem of retrōgradātiō), probably equivalent to Latin retrōgrad(us) retrograde + -ātiō -ation, as translation of Greek anapodismós

Related forms

ret·ro·gra·da·to·ry [re-truh-grey-duh-tawr-ee, -tohr-ee] /ˌrɛ trəˈgreɪ dəˌtɔr i, -ˌtoʊr i/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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