diapason /dī-ə-pāˈzən, -sən/ (music)

1. A full volume of various sounds in concord
2. The whole range or compass of tones
3. A standard of pitch
4. A whole octave (obsolete)
5. A bass part (obsolete)
6. Harmony (obsolete)
7. A foundation-stop of an organ (open or stopped diapason) extending through its whole range

• ceremonies
• ceremonious
• ceremoniously
• ceremoniousness
• ceremoniousnesses
• ceremony
• Cerenkov radiation
• cereous
• ceres
• Ceres
• ceresin
• ceresine
• ceresines
• ceresins
• cereus
• cereuses
• cerge
• cerges
• ceria
• cerias
• ceric
• ceriferous
• cering
• Cerinthian
• ceriph