isogone isogonally • isogonic · · · Info · Definitions · Synonyms · Characters · · isogone · · Text Latin · · Script 7 · · Length 3 · · Syllables Definitions · · · (noun) an imaginary line connecting points on the Earth's surface where the magnetic declination is the same. Synonyms: isogonic line, isogonal line. · · Noun Definition 1 Synonyms · · · isogonic line · · Synonym 1 isogonal line · · Synonym 2 Characters · · e latin small letter e U+0065 g latin small letter g U+0067 i latin small letter i U+0069 n latin small letter n U+006E o latin small letter o U+006F s latin small letter s U+0073