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Noun, Suru verb, Intransitive verb
1. spreading; disseminating; scattering
Noun, Suru verb, Intransitive verb
2. diffusion (of light, gas)
Wikipedia definition
3. DiffusionDiffusion is one of several transport phenomena that occur in nature. A distinguishing feature of diffusion is that it results in mixing or mass transport without requiring bulk motion. Thus, diffusion should not be confused with convection or advection, which are other transport mechanisms that use bulk motion to move particles from one place to another. In Latin word "diffundere" means "to spread out".
Read “Diffusion” on English Wikipedia
Read “拡散” on Japanese Wikipedia
Read “Diffusion” on DBpedia

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