chroma
n. uncountable C1 Advanced chro·ma
n. the quality of a sound that makes it sound rich or full. It is often used to describe how much color or depth a musical note has.
n. the quality of a sound that gives it a sense of richness or fullness. In music theory, it refers to the specific set of overtones or harmonics that distinguish one timbre from another.
The piano has a very rich chroma compared to a flute.
The composer used a combination of strings and brass to create a dense chroma that filled the concert hall.
While the melody remains simple, the underlying chroma of the orchestration provides a complex emotional depth that becomes more apparent with repeated listening.