noun
diminished chord; diminished triad
Music theory term for a chord consisting of a root, minor third, and diminished fifth.
減三和音は、根音の上に短三度と減五度を重ねた和音です。
A diminished triad is a chord built by stacking a minor third and a diminished fifth above the root.
Compound of 減 (gen, 'diminished') + 三和音 (sanwaon, 'triad').