- (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.
- (n.) Introduced or inserted among others; additional; supernumerary.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). intercalary. Retrieved September 24, 2026, from http://smartdefine.org/intercalary/definitions/2022576 |
| Chicago | Webster's. 2011. "intercalary" http://smartdefine.org/intercalary/definitions/2022576 (accessed September 24, 2026). |
| Harvard | Webster's 2011, intercalary, Smart Define, viewed 24 September, 2026, <http://smartdefine.org/intercalary/definitions/2022576>. |
| MLA | Webster's. "intercalary" 27 May 2011. Web. 24 September 2026. <http://smartdefine.org/intercalary/definitions/2022576> |