Definition of degeneration noun from the Oxford Advanced Learner's Dictionary

 

degeneration

 noun
noun
BrE BrE//dɪˌdʒenəˈreɪʃn//
 
; NAmE NAmE//dɪˌdʒenəˈreɪʃn//
 
[uncountable]
 
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the process of becoming worse or less acceptable in quality or condition social/moral degeneration Intensive farming in the area has caused severe degeneration of the land. Speech degeneration often occurs in children who become deaf after acquiring language. Word Origin late 15th cent.: from late Latin degeneratio(n-), from the verb degenerare, from degener ‘debased’, from de- ‘away from’ + genus, gener- ‘race, kind’.
See the Oxford Advanced American Dictionary entry: degeneration