In a manner that is located outside the walls of a city, institution, or organization; with reference to activities occurring beyond official boundaries.
From Latin 'extra' (outside) + 'muralis' (relating to walls) + English adverbial suffix '-ly'. The adverbial form specifies how something happens in relation to extramural contexts.
When you do something 'extramurally,' you're operating in a shadowy space—officially it doesn't count, but everyone knows it matters. Universities count extramural research differently than campus research, which changes how scientists value their own work.
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