a thorough overflow or sweeping flood of water a deluge
- a-sudden violent improvement in the planet earth's surface
- a conference resulting in great loss and misfortune
- a thorough overflow or sweeping flood of water; a deluge.
- Any violent catastrophe, concerning unexpected and extensive changes of the earth's surface.
1630s, from French cataclysme (16c.), from Latin cataclysmos or right from Greek kataklysmos "deluge, flooding, inundation," from kataklyzein "to deluge," from kata "down" (see cata-) + klyzein "to wash," from PIE *kleue- "to wash, clean" (see cloaca).
But he is best known as the regenerator of the realm after the cataclysm of1241-1242(see Bela Iv.).