a·phe·li·on (ə-fele-ən, ap-he-)
The point on the orbit of a celestial body that is farthest from the sun.
[FromNew Latinaphelium : Greekapo-, apo- + Greekhelios, sun; see sāwel- in the Appendix of Indo-European roots.]
(click for a larger image)aphelion
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