chro·mat·ic
adjective/krəˈmætɪk/
/krəˈmætɪk/
(music)- of the chromatic scale, a series of musical notes that rise and fall in semitones
半音（阶）的 Word Originearly 17th cent.: from French chromatique or Latin chromaticus, from Greek khrōmatikos, from khrōma, khrōmat- ‘colour, chromatic scale’.