(n.) A passage; especially, the passage between the third and fourth ventricles in the brain; the aqueduct of Sylvius.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). iter. Retrieved September 20, 2026, from http://smartdefine.org/iter/definitions/2024092 |
| Chicago | Webster's. 2011. "iter" http://smartdefine.org/iter/definitions/2024092 (accessed September 20, 2026). |
| Harvard | Webster's 2011, iter, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/iter/definitions/2024092>. |
| MLA | Webster's. "iter" 27 May 2011. Web. 20 September 2026. <http://smartdefine.org/iter/definitions/2024092> |