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orbital

adjective
🔊/ˈɔːbɪtl/
🔊/ˈɔːrbɪtl/
 [only before noun]
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  1. connected with the orbit of a planet or object in space（行星或空间物体）轨道的Topics Spacec2
  2. (British English) (of a road道路) built around the edge of a town or city to reduce the amount of traffic travelling through the centre（城市）外环路的
    3. Word Originmid 16th cent. (referring to the eye socket): probably from medieval Latin orbitalis, from Latin orbita ‘course, track’ (in medieval Latin ‘eye socket’), feminine of orbitus ‘circular’, from orbis ‘ring’.

orbital

noun
🔊/ˈɔːbɪtl/
🔊/ˈɔːrbɪtl/
 (British English)
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  1. a very large ring road, especially if it is a motorway高速环行路
    • the M25 London orbital伦敦 M25 高速环行路
    Topics Transport by car or lorryc2
    Word Originmid 16th cent. (referring to the eye socket): probably from medieval Latin orbitalis, from Latin orbita ‘course, track’ (in medieval Latin ‘eye socket’), feminine of orbitus ‘circular’, from orbis ‘ring’.