/ ˌekstrəˈmjʊərəl; NAmE -ˈmjʊrəl/ adjective [ usually before noun ]
1.
( BrE ) arranged by a university, college, etc. for people who only study part-time :
extramural education / studies / departments
—see also extension (7)
2.
( formal ) happening or existing outside or separate from a place, an organization, etc. :
The hospital provides extramural care to patients who do not need to be admitted.
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WORD ORIGIN
mid 19th cent. (in sense 2): from Latin extra muros outside the walls + -al .