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

• peripherality
• peripherals
• peripheral unit
• peripheral units
• peripheric
• peripherical
• peripheries
• periphery
• periphery camera
• periphonic
• periphrase
• periphrased
• periphrases
• periphrasing
• periphrasis
• periphrastic
• periphrastical
• periphrastically
• periphyton
• periphytons
• periplast
• periplasts
• periplus
• peripluses
• periproct