pentalogy /pen-talˈə-ji/

1. A pentad, esp of published works
2. A series of five related books

• hydatid
• hydatid disease
• hydatidiform
• hydatidiform mole
• hydatidiform moles
• hydatids
• hydatoid
• Hydnocarpus
• hydr-
• Hydra
• hydraemia
• hydraemias
• hydragogue
• hydragogues
• hydra-headed
• hydrangea
• Hydrangeaceae
• hydrangeas
• hydrant
• hydranth
• hydranths
• hydrants
• hydrargyral
• hydrargyrism
• hydrargyrisms