Suffusion /(?)/

Suf·fu·sion

Suffusion

n.
  1. The act or process of suffusing, or state of being suffused; an overspreading.
    To those that have the jaundice, or like suffusion of eyes, objects appear of that color.
  2. That with which a thing is suffused.
  3. A blending of one color into another; the spreading of one color over another, as on the feathers of birds. (Zool.)