aphelion

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English[edit]

Etymology[edit]

Greek form of Latin aphelium, from Ancient Greek ἀπό (apó, from) + ἥλιος (hḗlios, sun) (modelled after apogaeum). Compare perihelion.

Pronunciation[edit]

  • IPA(key): /əˈfiːlɪən/, /æpˈhiːlɪən/

Noun[edit]

aphelion (plural aphelia)

  1. (astronomy) The point in the elliptical orbit of a planet, comet, etc., where it is farthest from the sun.

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