(n.pl.) The fifteenth day of March, May, July, and October, and the thirteenth day of the other months.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). ides. Retrieved September 20, 2026, from http://smartdefine.org/ides/definitions/2018751 |
| Chicago | Webster's. 2011. "ides" http://smartdefine.org/ides/definitions/2018751 (accessed September 20, 2026). |
| Harvard | Webster's 2011, ides, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/ides/definitions/2018751>. |
| MLA | Webster's. "ides" 27 May 2011. Web. 20 September 2026. <http://smartdefine.org/ides/definitions/2018751> |