1) Extramural 2) Lying between walls 1) Extramural 
• (a.) Lying between walls; inclosed by walls.
(in-tәr-mu´rәl) between the walls of an organ or organs.
In`ter·mu'ral adjective Lying between walls; inclosed by walls. 
[adj] - between two or more institutions etc
adjective between two or more institutions etc; `an intermural track meet`
of, pertaining to, or taking place between two or more institutions, cities, etc.: an intermural track meet. · occurring or being between walls, as of buildings or cities: a narrow, intermural forecourt.