1. Union of two.

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

• diad,
• dwad,
• dewad,
• deud,
• xuad,
• fuad,
• ruad,
• euad,
• djad,
• d8ad,
• d7ad,
• duzd,
• dusd,
• duwd,
• duaed,
• dua d,
• diud,
• doaud,
• doead,
• duead

• dude,
• duet,
• duty,
• dutta,
• dud.

The adjective form of the word "duad" is "duadic".

The plural of the "duad" can be the "duads".

The singular of the "duad" can be the "duad".