Definition of defunct adjective from the Oxford Advanced Learner's Dictionary



BrE BrE//dɪˈfʌŋkt//
; NAmE NAmE//dɪˈfʌŋkt//
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no longer existing, operating or being used a largely defunct railway network Word Originmid 16th cent. (in the sense ‘deceased’): from Latin defunctus ‘dead’, past participle of defungi ‘carry out, finish’, from de- (expressing reversal) + fungi ‘perform’.Extra examples He wrote for the now defunct newspaper, the Daily Correspondent. He wrote many articles for the now sadly defunct newspaper, the Daily Correspondent. The LP was made defunct by the arrival of the CD. These machines are now considered defunct. the ruined buildings of a long defunct mine
See the Oxford Advanced American Dictionary entry: defunct