An Etymological Dictionary of Astronomy and Astrophysics

English-French-Persian

فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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ground-based observation
  نپاهش از زمین  
nepâheš az zamin
Fr.: observation au sol  

An astronomical observation carried out using a telescope on Earth, as opposed to that from an orbiting satellite.

Etymology (EN): → ground; based, adj. of base, from
O.Fr. bas, from L. basis “foundation,” from Gk. basis “step, pedestal,” from bainein “to step;” → observation.

Etymology (PE): Nepâheš, → observation; az “from,” → ex-; zamin, → ground.