Meaning of cataclysmic

cat•a•clys•mic

Pronunciation: (kat"u-kliz'mik), [key]
— adj.
  1. of, pertaining to, or resulting from a cataclysm.
  2. of the nature of, or having the effect of, a cataclysm: cataclysmic changes.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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