資料來源 : Webster's Revised Unabridged Dictionary (1913)

Circumdenudation \Cir`cum*den`u*da"tion\, n. [Pref. circum- +
   denudation.] (Geol.)
   Denudation around or in the neighborhood of an object.

   {Hills of circumdenudation}, hills which have been produced
      by surface erosion; the elevations which have been left,
      after denudation of a mass of high ground. --Jukes.