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Diffusion

dɪˈfjuːʒn

Diffusion definitions
noun
diffusion
  1. the spreading of something more widely

    "the rapid diffusion of ideas and technology"

    • the action of spreading the light from a light source evenly 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