aphelion Aphelinus • apheliotropic · · · Info · Definitions · Antonyms · Characters · · aphelion · · Text Latin · · Script 8 · · Length Definitions · · · (noun) apoapsis in solar orbit; the point in the orbit of a planet or comet that is at the greatest distance from the sun. · · Noun Definition 1 Antonyms · · · perihelion · · Antonym 0 Characters · · a latin small letter a U+0061 e latin small letter e U+0065 h latin small letter h U+0068 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E o latin small letter o U+006F p latin small letter p U+0070