An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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segmented mirror
  آینه‌ی ِ برنکیده  
âyen-ye borankidé
Fr.: miroir segmenté  

A large telescope mirror consisting of smaller mirror segments designed to act as a single, larger reflecting surface. Because current monolithic mirrors cannot be constructed larger than about eight meters in diameter, the use of segmented mirrors is a key component for larger aperture telescopes.

See also: Segmented, p.p. of → segment (v.);
→ mirror.