retrogression

ret·ro·gres·sion  (rtr-grshn)

n.

1. The act or process of deteriorating or declining.

2. Biology A return to a less complex or more primitive state or stage.

Thesaurus

Noun	1.	retrogression - passing from a more complex to a simpler biological form degeneration transformation, transmutation, shift - a qualitative change abiotrophy - a loss of vitality and a degeneration of cells and tissues not due to any apparent injury cataplasia - (biology) degenerative reversion of cells or tissue to a less differentiated or more primitive form
	2.	retrogression - returning to a former state regress, retroversion, regression, reversion reversal - a change from one state to the opposite state; "there was a reversal of autonomic function"

Translations

retrogression [ˌretrəʊˈgreʃən] N → retroceso m, retrogradación f

retrogression

n (= backward movement) → rückläufige Bewegung; (= deterioration) → Rückentwicklung f