#permeation__pervasion__impregnation__saturation__suffusion  the process of permeating or infusing
  supertype:  diffusion  (physics) the process of diffusing; the intermingling of molecules in gases and liquids as a result of random thermal agitation
  subtype:  ammonification  impregnation with ammonia or a compound of ammonia
  subtype:  carbonation  saturation with carbon dioxide (as soda water)

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