An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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delayed neutrons
  نوترونهای ِ درنگیده  
notronhâ-ye derangidé
Fr.: neutrons retardés  

Neutrons resulting from nuclear fission which are emitted with a measurable time delay. Delayed neutrons are responsible for the ability to control the rate at which power can rise in a reactor. → prompt neutrons.

See also: Delayed, p.p. of the verbal form of → delay; → neutron.