D#dim is a diminished, spelled D#, F# and A. In Drop D tuning (D2 A2 D3 G3 B3 E4) the easiest shape is 10424x, which sits at fret 1, spans 3 frets, lets 1 string ring open and mutes 1 string. 12 positions for it are shown below, from the nut up to fret 11.
Notes and intervals
Note
D#
F#
A
Interval
1P
3m
5d
12 ways to play it
Ordered by how hard they are to fret, easiest first, one per position on the neck. Fret numbers are relative to the position marked beside each grid.
10424xsits at fret 1, spans 3 frets, lets 1 string ring open and mutes 1 string404242sits at fret 2, needs a barre across 3 strings at fret 2 and lets 1 string ring openx6787xsits at fret 6, spans 2 frets and mutes 2 strings70787xsits at fret 7, spans 1 fret, lets 1 string ring open and mutes 1 string1301311xxsits at fret 11, spans 2 frets, lets 1 string ring open and mutes 2 stringsxxx875sits at fret 5, spans 3 frets and mutes 3 strings130131110xsits at fret 10, spans 3 frets, lets 1 string ring open and mutes 1 stringx64845sits at fret 4, needs a barre across 3 strings at fret 4 and mutes 1 string1391311xxsits at fret 9, spans 4 frets and mutes 2 strings1042xxsits at fret 1, spans 3 frets, lets 1 string ring open and mutes 2 strings40424xsits at fret 2, spans 2 frets, lets 1 string ring open and mutes 1 stringxx1242sits at fret 1, spans 3 frets and mutes 2 strings
Keys D#dim belongs to
D#dim is diatonic to 8 of the 96 keys this app knows, playing a different role in each.