366 days 365addtocart • 3660flash · · · Info · Definitions · Synonyms · Characters · · 366 days · · Text Common · · Latin · · Scripts 8 · · Length 6 · · Syllables Definitions · · · (noun) in the Gregorian calendar: any year divisible by 4 except centenary years divisible by 400. Synonyms: leap year, intercalary year, 366 days, bissextile year. · · Noun Definition 1 Synonyms · · · leap year · · Synonym 1 intercalary year · · Synonym 2 bissextile year · · Synonym 3 Characters · · space U+0020 3 digit three U+0033 6 digit six U+0036 a latin small letter a U+0061 d latin small letter d U+0064 s latin small letter s U+0073 y latin small letter y U+0079