semitone.
(Of semi - and tone).
1. m. Mús. Each of the two unequal parts in which splits the interval of a tone.
1. m. Mús. semitone lower.
1. m. Mús. semitone higher.
semitone enharmonic.1. m. Mús. Interval of a comma, which mediates between two semitones minors within a same tone.