trilogy /trilˈə-ji/

1. Any group of three works, such as novels, plays, etc
2. A group of three related Greek tragedies, orig performed together
3. A triad

• oxidized
• oxidizer
• oxidizers
• oxidizes
• oxidizing
• oxime
• oximes
• oximeter
• oximeters
• oxland
• oxlands
• oxlip
• oxlips
• Oxon
• Oxonian
• oxonium
• oxoniums
• oxonium salts
• oxpecker
• oxpeckers
• oxslip
• oxslips
• oxtail
• oxtails
• oxter