SEMITONE


Meaning of SEMITONE in English

US also half step, [US and ANZ] also half tone [noun] [C] - the smallest difference in sound between two notes which are next to each other in the western musical scaleThere is one semitone between B flat and B.The middle note in a minor chord is a semitone lower than in a major chord.

Cambridge English vocab.      Кембриджский английский словарь.