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1. Oxford American Dictionary

   diffusion

   • IPA[dəˈfyo͞oZHən]

   美式

   • n.
     the spreading of something more widely；the action of spreading the light from a light source evenly so as to reduce glare and harsh shadows.

   • noun: diffusion

2. • 釋義

   n.

   名詞

   • 1. the spreading of something more widely the diffusion of Duchamp’s thought and art
   • ▪ the action of spreading the light from a light source evenly so as to reduce glare and harsh shadows.
   • ▪ the intermingling of substances by the natural movement of their particles the rate of diffusion of a gas
   • ▪ the dissemination of elements of culture to another region or people.