Fdim (F diminished): F A♭ C♭. Formula 1 ♭3 ♭5. Two minor 3rds stacked: tense and unstable, it is the vii° of a major key and wants to resolve.
Made of3
Contains & part of32
Inversions3
- Fdim5/3
Root position · F A♭ C♭
- Fdim/A♭6
1st inversion · A♭ C♭ F
- Fdim/C♭6/4
2nd inversion · C♭ F A♭