A♭dim
Diminished · A♭ – C♭ – D
- A♭R
- C♭m3
- D♭5
Guitar voicings
Piano
- Root
- Third / sus
- Fifth
- Sixth / seventh
- Extension
About the A♭dim chord
The A♭dim chord (Diminished) is built from A♭ (the root), C♭ (a minor third) and D (a diminished fifth). Diminished triads are tense and unstable, often used as passing chords between stronger harmonies.