An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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chain reaction
  واژیرش ِ زنجیری، واکنش ِ ~  
vâžireš-e zanjiri, vâkoneš-e ~
Fr.: réaction en chaîne  

A succession of → nuclear fissions when the neutrons released by previous fissions produce other nuclear fissions
which themselves cause other reactions and the reactions goes on increasing exponentially.

See also: → chain; → reaction.