intercalary

1. a. Inserted or introduced among others in the calendar; as, an intercalary month, day, etc.; -- now applied particularly to the odd day (Feb. 29) inserted in the calendar of leap year. See Bissextile, n. Source: opted

2. n. Introduced or inserted among others; additional; supernumerary. Source: opted

3. adj. having a day or month inserted to make the calendar year correspond to the solar year: Source: wordnet

4. 1. (Chron.) Inserted or introduced among others in the calendar; as, an intercalary month, day, etc.; -- now applied particularly to the odd day (Feb. 29) inserted in the calendar of leap year. See Bissextile, n. 2. Introduced or inserted among others; additional; supernumerary. "Intercalary spines." Owen. This intercalary line . . . is made the last of a triplet. Beattie. Intercalary day (Med.), one on which no paroxysm of an intermittent disease occurs. Mayne. Source: webster

5. Inserted or introduced among others in the calendar; as, anintercalary month, day, etc.; -- now applied particularly to the oddday (Feb. 29) inserted in the calendar of leap year. See Bissextile,n. Source: adambom

6. s. having a day or month inserted to make the calendar year correspond to the solar year: "Feb. 29 is an intercalary day" Source: ecdict

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