intercalary year

Other forms: intercalary years

Definitions of intercalary year
  1. noun
    in the Gregorian calendar, a year with 366 days that occurs every four years with February 29 being the extra day
    synonyms: 366 days, bissextile year, leap year
    see moresee less
    type of:
    twelvemonth, year, yr
    a period of time containing 365 (or 366) days
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