An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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diffusion coefficient
  همگر ِ پخش  
hamgar-e paxš
Fr.: coefficient de diffusion  

A factor of proportionality involved in the → diffusion equation. It may be defined as the amount of the quantity diffusing across a unit area through a unit concentration gradient in unit time. → magnetic diffusivity.

See also: → diffusion; → coefficient.