(a.) Pertaining to or originated by, some person named Gregory, especially one of the popes of that name.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). gregorian. Retrieved September 20, 2026, from http://smartdefine.org/gregorian/definitions/2013673 |
| Chicago | Webster's. 2011. "gregorian" http://smartdefine.org/gregorian/definitions/2013673 (accessed September 20, 2026). |
| Harvard | Webster's 2011, gregorian, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/gregorian/definitions/2013673>. |
| MLA | Webster's. "gregorian" 27 May 2011. Web. 20 September 2026. <http://smartdefine.org/gregorian/definitions/2013673> |