Intramural

In`tra`mu´ral

a.	1.	Being within the walls, as of a city.
	2.	Of or pertaining to those activities occurring within a single institution or organization, such as intramural sports involving students of a single school; an intramural debate within a professional society.
	3.	(Anat. & Med.) Being within the substance of the walls of an organ; as, intramural pregnancy.

Adj.

intramural - carried on within the bounds of an institution or community; "most of the students participated actively in the college's intramural sports program"

Antonyms:

extramural - carried on outside the bounds of an institution or community; "extramural sports"