1British (of a course of study) arranged for people who are not full-time members of a university or other educational establishment:extramural education
additional to one’s work or course of study:extramural activities
2outside the walls or boundaries of a town or city:the extramural cemetery in Brighton
Derivatives
extramurally
adverb
Origin:
mid 19th century(in sense 2): from Latin extra muros 'outside the walls' + -al
extramural in other Oxford dictionaries
Definition of extramural in the US English dictionary