1. Pertaining to a flood, especially that in Noah's days; effected or produced by a deluge.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• delluvian,
• diluvion,
• siluvian,
• xiluvian,
• ciluvian,
• filuvian,
• riluvian,
• eiluvian,
• duluvian,
• djluvian,
• dkluvian,
• doluvian,
• d9luvian,
• dilluvian,
• diluvien,
• dilluvia,
• Dillyvian,
• Dilluvion,
• Dilluvien,
• Dillivian

• Diluting,
• dolphin.

The adjective form of the word "diluvian" is "diluvial".

The plural form of the word "diluvian" is "diluvians".

The singular form of the word "diluvian" is "diluvium"