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English definition of “extinct”

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extinct

adjective [not gradable]  /ɪkˈstɪŋkt/ us  
no longer existing: There is concern that the giant panda will soon become extinct. An extinct volcano (= mountain made from burned materials) is one that is no longer active.
extinction
noun [U]  /ɪkˈstɪŋk·ʃən/ us  
Many species of plants and animals are threatened with extinction.
(Definition of extinct from the Cambridge Academic Content Dictionary © Cambridge University Press)
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