aphelion

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[edit] English

[edit] Etymology

Greek form of Latin aphelium from Ancient Greek ἀπό (apo), from) + ἥλιος (hēlios), sun) (modelled after apogaeum). Compare parhelion.

[edit] Pronunciation

  • IPA: /əˈfiːlɪən/

[edit] Noun

Singular
aphelion

Plural
aphelia

aphelion (plural aphelia)

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

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