suffusion

from WordNet (r) 3.0 (2006)

suffusion
    n 1: the process of permeating or infusing something with a
         substance [syn: {permeation}, {pervasion}, {suffusion}]

from The Collaborative International Dictionary of English v.0.48

Suffusion \Suf*fu"sion\, n. [L. suffusio: cf. F. suffusion.]
   1. The act or process of suffusing, or state of being
      suffused; an overspreading.
      [1913 Webster]

            To those that have the jaundice, or like suffusion
            of eyes, objects appear of that color. --Ray.
      [1913 Webster]

   2. That with which a thing is suffused.
      [1913 Webster]

   3. (Zool.) A blending of one color into another; the
      spreading of one color over another, as on the feathers of
      birds.
      [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

30 Moby Thesaurus words for "suffusion":
      blush, blushing, coloring, crimsoning, decoction, diffusion, flush,
      flushing, imbuement, impregnation, infiltration, infusion,
      instillation, instillment, interpenetration, mantling, marination,
      overrunning, overspreading, overswarming, penetration, permeation,
      pervasion, pudency, pudicity, reddening, saturation, soaking,
      steeping, transfusion