pentad /penˈtad/

1. A set of five things
2. A period of five years or five days
3. An atom, element or radical with a combining power of five

• drupels
• drupes
• druse
• Druse
• drusen
• druses
• Druses
• Drusian
• drusier
• drusiest
• drusy
• drusy cavity
• druthers
• druxier
• druxiest
• druxy
• Druz
• Druze
• DRV
• dry
• dryad
• dryades
• dryads
• Dryasdust
• dry batteries