from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A violent upheaval that causes great destruction or brings about a fundamental change.
- n. A violent and sudden change in the earth's crust.
- n. A devastating flood.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A sudden, violent event.
- n. A sudden and violent change in the earth's crust.
- n. A great flood.
from the GNU version of the Collaborative International Dictionary of English
- n. An extensive overflow or sweeping flood of water; a deluge.
- n. Any violent catastrophe, involving sudden and extensive changes of the earth's surface.
from The Century Dictionary and Cyclopedia
- n. A deluge or an overflowing of water; a flood; specifically, the Noachian flood.
- n. In geology, an inundation or deluge, or other violent and sudden physical action of great extent, supposed to have been the efficient cause of various phenomena (as of the deposition of different formations of diluvium or drift) for which the gradual action of moderate currents, or that of ice, is considered to have been inadequate.
- n. Figuratively, a sudden or violent action of overwhelming force and extended sweep.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a sudden violent change in the earth's surface
- n. an event resulting in great loss and misfortune
French cataclysme, from Latin cataclysmos, deluge, from Greek kataklusmos, from katakluzein, to inundate : kata-, intensive pref.; see cata- + kluzein, to wash away.(American Heritage® Dictionary of the English Language, Fourth Edition)
French cataclysme, from Latin cataclysmos, from Ancient Greek κατακλυσμός (kataklysmos, "deluge, flood"), from κατακλύζω (kataklyzo, "to dash over, flood, deluge, inundate"), from κατά (kata, "downwards, towards") + κλύζω (klyzo, "to wash off, to wash away, to dash over"). (Wiktionary)