Extramural (adjective)

1. Situated or occurring outside the walls of a building or city.
2. Not belonging to or within an institution or organization, especially a school or university.
3. Outside of normal or regular activities or concerns.

Origin:

Derived from the latin words 'extra' meaning outside and 'murus' meaning wall or rampart.

Examples:

1. The extramural activities offered by the university were popular among students.
2. The extramural classes were held in the evenings, outside of regular school hours.
3. The extramural tournament was open to all players, not just those on the school team.
4. The extramural research projects were funded by external organizations.
5. The extramural trip to the museum was a great learning experience for the students.