(n.) A neck or narrow slip of land by which two continents are connected or by which a peninsula is united to the mainland; as, the Isthmus of Panama; the Isthmus of Suez, etc.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). isthmus. Retrieved September 28, 2026, from http://smartdefine.org/isthmus/definitions/2024059 |
| Chicago | Webster's. 2011. "isthmus" http://smartdefine.org/isthmus/definitions/2024059 (accessed September 28, 2026). |
| Harvard | Webster's 2011, isthmus, Smart Define, viewed 28 September, 2026, <http://smartdefine.org/isthmus/definitions/2024059>. |
| MLA | Webster's. "isthmus" 27 May 2011. Web. 28 September 2026. <http://smartdefine.org/isthmus/definitions/2024059> |