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

• upside-down
• upside-down cake
• upside-down cakes
• upsideowne
• upsides
• upsies
• upsilon
• upsilons
• upsitting
• upsittings
• upskill
• upskilled
• upskilling
• upskills
• up so down
• upsold
• upspake
• upspeak
• upspeaking
• upspeaks
• upspear
• upspeared
• upspearing
• upspears
• upspoke