An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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pre-main sequence star
  ستاره‌ی ِ پیش-رشته‌ی ِ فریست  
setâre-ye piš-rešte-ye farist
Fr.: étoile pré-séquence principale  

A star that evolves in the → Hayashi phase and has not yet reached the → zero-age main sequence.

See also: → pre-; → main sequence,
→ star.