Origin:
Gr chrōma (gen. chrōmatos), color; orig. skin, color of the skin < IE base *ghrēu-, to rub hard over, crumble > grits
See chroma in American Heritage Dictionary 4
noun
The aspect of color in the Munsell color system by which a sample appears to differ from a gray of the same lightness or brightness and that corresponds to saturation of the perceived color.