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

• unmeaningness
• unmeaningnesses
• unmeant
• unmeasurable
• unmeasurably
• unmeasured
• unmechanic
• unmechanical
• unmechanise
• unmechanised
• unmechanises
• unmechanising
• unmechanize
• unmechanized
• unmechanizes
• unmechanizing
• unmedicinable
• unmeditated
• unmeek
• unmeet
• unmeetly
• unmeetness
• unmeetnesses
• unmellowed
• unmelodious