Suf‐fu″sion (?), n. [L. suffusio: cf. F. suffusion.] 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. Ray.
2. That with which a thing is suffused.
3. (Zoöl.) A blending of one color into another; the spreading of one color over another, as on the feathers of birds.