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holocaust

 
/ˈhɑl·əˌkɔst/, /ˈhoʊ·lə-/, /-ˌkɑst/ n [C]

Definition

a large amount of destruction, esp. by fire or heat, or the killing of large numbers of people: a nuclear holocaust the Holocaust The Holocaust was the systematic murder of many people, esp. Jews, by the Nazis during World War II.
(Definition of holocaust n from the Cambridge Academic Content Dictionary © Cambridge University Press)

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