̷ ̷ˈ ̷ ̷əˌsizəm noun
( -s )
1. : the quality or state of being chromatic
2.
a. : the act or action of chromaticizing : the use of chromatic notes or tones
excessive chromaticism means excessive increase in harmonic tension — Mosco Carner
— contrasted with diatonicism
b. : an instance of this use