Of or relating to a disease that originates outside the locality in which it occurs.

Roget 220: exterior, external; outer most; outward, outlying, outside, outdoor; round about etc. 227; extramural; extralimitary^†, extramundane.    superficial, skin-deep; frontal, discoid.    extraregarding^†; excentric^†, eccentric; outstanding; extrinsic etc. 6; ecdemic [Med.], exomorphic^†.    ... show more