great year great-witted • great yellowcress · · · Info · Definitions · Synonyms · Characters · · great year · · Text Common · · Latin · · Scripts 10 · · Length 2 · · Syllables Definitions · · · (noun) time required for one complete cycle of the precession of the equinoxes, about 25,800 years. Synonyms: great year, Platonic year. · · Noun Definition 1 Synonyms · · · platonic year · · Synonym 1 Characters · · space U+0020 a latin small letter a U+0061 e latin small letter e U+0065 g latin small letter g U+0067 r latin small letter r U+0072 t latin small letter t U+0074 y latin small letter y U+0079