retrogression

Noun
  1. Passing from a more complex to a simpler biological form (synset 107441493)
    is a type of: shift, transformation, transmutation - a qualitative change
    subtypes:
    • 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
    same as: degeneration
  2. Returning to a former state (synset 100236075)
    is a type of: reversal - a change from one state to the opposite state
    same as: regress, regression, retroversion, reversion

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