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cataclysmic

[kat-uh-kliz-mik] /ˌkæt əˈklɪz mɪk/
adjective
1.
of, relating to, or resulting from a cataclysm.
2.
of the nature of, or having the effect of, a cataclysm:
cataclysmic changes.
Origin of cataclysmic
1850-1855
1850-55; cataclysm + -ic
Related forms
cataclysmically, adverb
noncataclysmal, adjective
noncataclysmic, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Word Origin and History for cataclysmic
adj.

1837, from cataclysm + -ic. Related: Cataclysmical (1857); cataclysmically.

Online Etymology Dictionary, © 2010 Douglas Harper
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