or di·lu·vi·an

[ dih-loo-vee-uh l ]
/ dɪˈlu vi əl /


pertaining to or caused by a flood or deluge.
Geology Now Rare. pertaining to or consisting of diluvium.

Origin of diluvial

1650–60; < Late Latin dīluviālis, equivalent to dīluvi(um) flood (see deluge) + -ālis -al1

Related forms

pre·di·lu·vi·al, adjectiveun·di·lu·vi·al, adjectiveun·di·lu·vi·an, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for diluvian

British Dictionary definitions for diluvian



/ (daɪˈluːvɪəl, dɪ-) /


of or connected with a deluge, esp with the great Flood described in Genesis
of or relating to diluvium

Word Origin for diluvial

C17: from Late Latin dīluviālis; see diluvium
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Science definitions for diluvian


[ dĭ-lōōvē-əl ]

Relating to or produced by a flood.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.