 ##  [Effective Diffusivity](/index.php/effective-diffusivity) 

  ##  [Effective Diffusivity](https://natural.quantumdictionary.io/effective-diffusivity-0) 

  
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**Natural &amp; Formal Sciences Dictionary**

 
Definition

A scalar or tensor coefficient that characterizes the averaged rate of transport of a conserved scalar across a heterogeneous medium, representing the macroscopic diffusion experienced by the mean field after averaging over fine-scale structure.