Cat"a*clysm (?), n. [L. cataclysmos, Gr. , from to dash over, inundate; downward, against + to wash or dash or over: cf. F. cataclysme.]

1.

An extensive overflow or sweeping flood of water; a deluge.

2. Geol.

Any violent catastrophe, involving sudden and extensive changes of the earth's surface.

 

© Webster 1913.

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