də̇]ˈlüvēəl, (ˈ)dī]|lü-, -vyəl also ]lˈyü- or ]l|yü- adjective
Etymology: Late Latin diluvialis, from Latin diluvium flood + -alis -al
1.
a. : of, concerning, or relating to a flood or deluge, especially the deluge described in the Bible
b. : resembling a flood : flooding
2. : effected or produced by a flood or deluge of water : of or characterized by diluvium
3. usually capitalized : of or belonging to the epoch during which man has existed