Dictionary
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. Also,cat"a•clys'mal.Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.