Intercalary Year — synonyms, definition

1. intercalary year (Noun)

366 days bissextile year leap year

intercalary year (Noun) — In the Gregorian calendar, a year with 366 days including 29th February; usually any year divisible by 4 is a leap year, with the exception that centenary years are not leap years unless divisible by 400.

twelvemonth year yr