- (n.) The quotient of a unit divided by thirteen; one of thirteen equal parts into which anything is divided.
- (n.) The interval comprising an octave and a sixth.
- (a.) Next in order after the twelfth; the third after the tenth; -- the ordinal of thirteen; as, the thirteenth day of the month.
- (n.) The next in order after the twelfth.
- (a.) Constituting or being one of thirteen equal parts into which anything is divided.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). thirteenth. Retrieved September 21, 2026, from http://smartdefine.org/thirteenth/definitions/2072162 |
| Chicago | Webster's. 2011. "thirteenth" http://smartdefine.org/thirteenth/definitions/2072162 (accessed September 21, 2026). |
| Harvard | Webster's 2011, thirteenth, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/thirteenth/definitions/2072162>. |
| MLA | Webster's. "thirteenth" 28 May 2011. Web. 21 September 2026. <http://smartdefine.org/thirteenth/definitions/2072162> |