noun
tritone
A musical interval spanning three whole tones (augmented fourth or diminished fifth). Used in music theory and composition.
三全音は中世では「悪魔の音程」と呼ばれていた。
The tritone was called the 'devil's interval' in the Middle Ages.
Compound of 三 (three), 全 (whole), and 音 (tone), literally 'three whole tones'. A direct translation of the Western musical term 'tritone'.