aphelium

Unadapted borrowing from Latin aphelium.

• Rhymes: -iːliəm

aphelium

1. (obsolete) Synonym of aphelion.
   • 1715, David Gregory, The Elements of Aſtronomy, Physical and Geometrical, volume I, London: […] J. Nicholson […], page 147:

     Wherefore a Planet, whoſe Orbit is an Ellipſe, having the Sun for a Focus, muſt neceſſarily be urged, even in its aſcent from the Sun, from the Perihelium to the Aphelium, by a Force tending to the Sun, fince an Ellipſe is concave towards both Foci.

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

• IPA^(key): /ɑpˈɦeː.li.ʏm/

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• Hyphenation: ap‧he‧li‧um

aphelium n (plural aphelia)

1. (astronomy) aphelion

• perihelium

aphelium n (definite singular apheliet, indefinite plural aphelier, definite plural aphelia or apheliene)

1. alternative form of aphel

aphelium n (definite singular apheliet, indefinite plural aphelium, definite plural aphelia)

1. alternative form of aphel