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retrogradation

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noun ret·ro·gra·da·tion \ˌre-trō-grā-ˈdā-shən, -grə-\

Definition of retrogradation

  1. :  the action or process of retrograding



Circa 1545

First Known Use of retrogradation

circa 1545


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to lessen in amount, effect, or force

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