(n.) A coral island or islands, consisting of a belt of coral reef, partly submerged, surrounding a central lagoon or depression; a lagoon island.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). atoll. Retrieved September 20, 2026, from http://smartdefine.org/atoll/definitions/1976830 |
| Chicago | Webster's. 2011. "atoll" http://smartdefine.org/atoll/definitions/1976830 (accessed September 20, 2026). |
| Harvard | Webster's 2011, atoll, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/atoll/definitions/1976830>. |
| MLA | Webster's. "atoll" 27 May 2011. Web. 20 September 2026. <http://smartdefine.org/atoll/definitions/1976830> |