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Collins

comet

  

      n   a celestial body that travels around the sun, usually in a highly elliptical orbit: thought to consist of a solid frozen nucleus part of which vaporizes on approaching the sun to form a gaseous luminous coma and a long luminous tail  
     (C13: from Old French comète, from Latin cometa, from Greek kometes long-haired, from kome hair)  
  cometary, cometic      adj  


Halley's Comet  
      n   a comet revolving around the sun in a period of about 76 years and last seen in 1985--86  
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Consulter aussi:

Halley's Comet, come, Comte, come at

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