extinctionnoun [ U ]uk /ɪkˈstɪŋk.ʃən/ us /ɪkˈstɪŋk.ʃən/
Many species of plants and animals are in danger of/threatened with extinction (= being destroyed so that they no longer exist).
(Definition of “extinction” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)
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