What is another word for Diesis?
Pronunciation: [dˈiːsiz] (IPA) 
Diesis is a musical term that refers to the interval between two adjacent notes in the chromatic scale, which is smaller than a whole tone and larger than a semitone. In musical theory, the term has been used to denote accidentals and tuning systems. Synonyms for the word Diesis include the quarter-tone, microtonal and comma. Comma refers to a minute difference between two pitches used in a tuning system. Microtonal is another synonym for Diesis, which has been used to describe the use of pitches that fall outside of the standard Western twelve-tone system. While quarter-tone is used to describe a kind of microtonal interval, which is half the width of a semitone.
