diurnal parallax diurnalness • diurnal variation · · · Info · Definitions · Synonyms · Characters · · diurnal parallax · · Text Common · · Latin · · Scripts 16 · · Length 6 · · Syllables Definitions · · · (noun) the parallax of a celestial body using two points on the surface of the earth as the earth rotates. Synonyms: geocentric parallax, diurnal parallax. · · Noun Definition 1 Synonyms · · · geocentric parallax · · Synonym 1 Characters · · space U+0020 a latin small letter a U+0061 d latin small letter d U+0064 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E p latin small letter p U+0070 r latin small letter r U+0072 u latin small letter u U+0075 x latin small letter x U+0078