#degeneration  the process of declining from a higher to a lower level of effective power or vitality or essential quality
  supertype:  #process__proces  a sustained phenomenon or one marked by gradual changes through a series of states; "events now in process"; "the process of calcification begins later for boys than for girls"
  subtype:  #attack.degeneration  the onset of a corrosive or destructive process (as by a chemical agent); "the film was sensitive to attack by acids"; "open to attack by the elements"
  subtype:  #obsolescence  the process of becoming obsolete; falling into disuse or becoming out of date; "a policy of planned obsolescence"

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