An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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orthogonal trajectory
  ترایشانه‌ی ِ ارداکنج  
tarâyešâne-ye ardâkonj
Fr.: trajectoire orthogonale  

Math.: An → isogonal trajectory where the family of curves are cut at right angles.

See also: → orthogonal; → trajectory.