Guitar chords in the key of D major:
Chord Ddim (5th fret) notes: D, Ab, D and F. You must leave out the 6th and 1st strings.
Ddim - D diminished triad guitar chord's alternative names: D°, D-5, Dm-5, and Ddim. See also: Ddim7 and Dm7b5.
1(D), b3(F), b5(G#/Ab).