Lit., closed sea; hence, a body of water within the separate jurisdiction of the nation; -- opposed to open sea, the water open to all nations and over which no single nation has special control.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). mare clausum. Retrieved September 26, 2026, from http://smartdefine.org/mare_clausum/definitions/2030607 |
| Chicago | Webster's. 2011. "mare clausum" http://smartdefine.org/mare_clausum/definitions/2030607 (accessed September 26, 2026). |
| Harvard | Webster's 2011, mare clausum, Smart Define, viewed 26 September, 2026, <http://smartdefine.org/mare_clausum/definitions/2030607>. |
| MLA | Webster's. "mare clausum" 27 May 2011. Web. 26 September 2026. <http://smartdefine.org/mare_clausum/definitions/2030607> |