- (n.) A disease, especially an intermittent fever, which returns every third day, reckoning inclusively or in which the intermission lasts one day.
- (a.) Occurring every third day; as, a tertian fever.
- (n.) A liquid measure formerly used for wine, equal to seventy imperial or eighty-four wine, gallons, being one third of a tun.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). tertian. Retrieved September 25, 2026, from http://smartdefine.org/tertian/definitions/2071428 |
| Chicago | Webster's. 2011. "tertian" http://smartdefine.org/tertian/definitions/2071428 (accessed September 25, 2026). |
| Harvard | Webster's 2011, tertian, Smart Define, viewed 25 September, 2026, <http://smartdefine.org/tertian/definitions/2071428>. |
| MLA | Webster's. "tertian" 28 May 2011. Web. 25 September 2026. <http://smartdefine.org/tertian/definitions/2071428> |