American English

Definition of cataclysm noun from the Oxford Advanced American Dictionary

 

cataclysm

 noun
noun
NAmE//ˈkæt̮əˌklɪzəm//
 
(formal)
 
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a sudden disaster or a violent event that causes change, for example a flood or a war to survive the cataclysm of the Black Death
cataclysmic
 
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NAmE//ˌkæt̮əˈklɪzmɪk//
 
adjective [usually before noun]
See the Oxford Advanced Learner's Dictionary entry: cataclysm