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  1. aphelion

    • IPA[apˈhiːlɪən]

    英式

    • n.
      the point in the orbit of a planet, asteroid, or comet at which it is furthest from the sun
    • noun: aphelion, plural noun: aphelia

    • 釋義

    名詞

    • 1. the point in the orbit of a planet, asteroid, or comet at which it is furthest from the sun Mars is at aphelion
    • 更多解釋
    • IPA[əˈfēlēən]

    美式

    • n.
      the point in the orbit of a planet, asteroid, or comet at which it is furthest from the sun: Mars is at aphelion

    Oxford American Dictionary