An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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geometric mean
  میانگین ِ هندسی  
miyângin-e hendesi (#)
Fr.: moyenne géométrique  

The middle term in a → geometric progression. Of two terms, the geometric mean is the square root of their product. For example, the geometric mean of 4 and 9 is ± 6. For a series of n terms, it is expressed as: (a1.a2. … .an)1/n.

See also: → geometric; → mean.