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English definition of “holocaust”

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holocaust

noun [C] uk   /ˈhɒl.ə.kɔːst/ us    /ˈhɑː.lə.kɑːst/
a very large amount of destruction, especially by fire or heat, or the killing of very large numbers of people: A nuclear holocaust (= destruction caused by nuclear weapons) would leave few survivors.
(Definition of holocaust from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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