'Cataclysmal' definitions:
Definition of 'cataclysmal'
From: WordNet
adjective
Severely destructive; "cataclysmic nuclear war"; "a cataclysmic earthquake" [syn: cataclysmal, cataclysmic]
Definition of 'Cataclysmal'
From: GCIDE
- Cataclysmal \Cat`a*clys"mal\, Cataclysmic \Cat`a*clys"mic\, a. Of or pertaining to a cataclysm. [1913 Webster]