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aphelion noun

  /æpˈhi.li.ən/ , /æpˈhil.jən/ , /æpˈhiː.lɪ.ən/ , /əˈfi.li.ən/ , /əˈfil.jən/ , /əˈfiː.lɪ.ən/
  • (astronomy, also, figuratively) The point in the elliptical orbit of a comet, planet, or other astronomical object, where it is farthest from the Sun.
 aiféilean, apaihéilean, cianphointe ó ghrian
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