An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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physical constant
  پایای ِ فیزیکی  
pâyâ-ye fiziki (#)
Fr.: constante physique  

A fundamental → physical quantity that is generally believed to be both universal in nature and constant in time.

See also: → physical; → constant.