denudation

Etymology
From, from.

Noun

 * 1) The act of stripping off covering, or removing the surface; a making bare.
 * 2)  The loss of the cellular covering of (the interior or exterior surface of an organ, etc.).
 * 3)  The laying bare of rocks by the washing away of the overlying earth, etc.; or the excavation and removal of them by the action of running water.
 * 1)  The laying bare of rocks by the washing away of the overlying earth, etc.; or the excavation and removal of them by the action of running water.

Related terms

 * denudative
 * denudative