Source : Webster's Revised Unabridged Dictionary (1913)

Outlying \Out"ly`ing\, a.
   Lying or being at a distance from the central part, or the
   main body; being on, or beyond, the frontier; exterior;
   remote; detached.

Source : WordNet®

outlying
     adj : relatively far from a center or middle; "outlying
           settlements" [syn: {outlying(a)}]