Fig. 1 · D#dim on the keyboard

piano chord

D♯dim

D♯1F♯♭3A♭5

Two minor thirds stacked. The fifth is diminished, so it cannot be dropped without losing the chord.

Written the other way round it is E♭dim — the same twelve keys on a piano, a different piece of notation.

on guitar on ukulele the scale

What is true of it

D♯dim is D♯, F♯ and A — 1, b3 and b5 counted from D♯.

D♯ in other shapes

D♯major D♯mminor D♯augaugmented D♯5power chord D♯sus2suspended second D♯sus4suspended fourth

Cdim C♯dim D♭dim Ddim Edim Fdim F♯dim G♭dim all 374