An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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apparent solar day
  روز ِ خورشیدی ِ پدیدار  
ruz-e xoršidi-ye padidâr
Fr.: jour solaire vrai  

The duration of one rotation of the Earth on its axis (→ Earth’s rotation), with respect to the → apparent Sun. It is measured by successive transits of the apparent Sun over the lower branch of a → meridian.

See also: → apparent; → solar day.