a·phe·li·on ( -f  l-n, -flyn)n. pl. a·phe·li·a (-l -) The point on the orbit of a celestial body that is farthest from the sun. [From New Latin aph lium : Greek apo-, apo- + Greek hlios, sun; see s wel- in Indo-European roots.] |   |
aphelion [æpˈhiːlɪən əˈfiː-]
n pl -lia [-lɪə]
(Astronomy) the point in its orbit when a planet or comet is at its greatest distance from the sun Compare perihelion
[from New Latin aphēlium (with pseudo-Greek ending -ion) from ap- + Greek hēlios sun]
aphelian adj
| aphelion (-fl-n) The point at which an orbiting body, such as a planet or comet, is farthest away from the Sun. Compare apogeeperihelion |  |
aphelion
the point in the orbit of a heavenly body where it is farthest from the sun. Cf. perihelion.
See also: Astronomythe point in the orbit of a heavenly body where it is farthest from the sun. See also perihelion.
See also: Planets
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. |  aphelion - apoapsis in solar orbit; the point in the orbit of a planet or comet that is at the greatest distance from the sunapoapsis, point of apoapsis - (astronomy) the point in an orbit farthest from the body being orbited perihelion - periapsis in solar orbit; the point in the orbit of a planet or comet where it is nearest to the sun |
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