An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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primordial curvature perturbation
  پرتورش ِ خمیدگی ِ بن‌آغازین  
partureš-e xamidegi-ye bonâqâzin
Fr.: perturbation de courbure primordiale  

In cosmological models, the phenomenon that is supposed to seed the → cosmic microwave background anisotropies and the structure formation of the Universe.

See also: → primordial; → curvature; → perturbation.