An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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chemical separation
  جدایی ِ شیمیایی  
jodâyi-ye šimiyâyi
Fr.: séparation chimique  

The physical processes that can cause certain elements to migrate in a → stellar atmosphere. These processes are thought to be important in creating the chemical peculiarities seen in
→ Am stars and → Ap stars.

See also: → chemical; → separation.