From Longman Dictionary of Contemporary Englishouterout‧er /ˈaʊtə $ -ər/ ●●○ adjective [only before noun] 1 OUT/OUTSIDEon the outside of something OPP inner Remove the tough outer leaves before cooking.2 OUT/OUTSIDEfurther from the centre of something OPP inner the outer suburbs3 relating to objects, activities etc that are part of the world, as opposed to your own thoughts and feelings OPP inner His inner conflict is related to struggles in the outer world.
Examples from the Corpus
outer• When the cause of deafness is not solely in the outer and/or middle ear, high frequencies are likely to be affected.• Materials: both the inner and outer are Pertex 4 fabric.• He comes over well as a person, with all the outer confidence you'd expect of a company representative.• the outer edge of the solar system• the rocks that make up the outer layers of the Earth's surface• The outer pockets of the jacket were filled and sagging.• This is trapped between the inner and outer shell with an insulating filling divided into compartments for greater efficiency.• Boil the beans for ten minutes and then remove the tough outer skin.• A spinning earth eliminated the excessive speed of rotation currently ascribed to the outer spheres.• the outer wall of the templeOrigin outer (1300-1400) out 