of a day or month: inserted in a calendar to resynchronize it with some objective time-measure, e.g. the solar year, as is February 29 in the Gregorian calendar
inserted in a calendar to resynchronize it with some objective time-measure, e.g. the solar year, as is February 29 in the Gregorian calendar
said of a year: containing an intercalary period
inserted between other elements or layers; interpolated
[Latin intercalarius from intercalare: see intercalate]