bissextile day bissextile • bissextile year · · · Info · Definitions · Synonyms · Characters · · bissextile day · · Text Common · · Latin · · Scripts 14 · · Length 5 · · Syllables Definitions · · · (noun) the name of the day that is added during a leap year. Synonyms: leap day, bissextile day, February 29. · · Noun Definition 1 Synonyms · · · leap day · · Synonym 1 february 29 · · Synonym 2 Characters · · space U+0020 a latin small letter a U+0061 b latin small letter b U+0062 d latin small letter d U+0064 e latin small letter e U+0065 i latin small letter i U+0069 l latin small letter l U+006C s latin small letter s U+0073 t latin small letter t U+0074 x latin small letter x U+0078 y latin small letter y U+0079