\Den`u*da"tion\ (?; 277), n. [L. denudatio: cf. F.
d['e]nudation.]
1. The act of stripping off covering, or removing the
   surface; a making bare.
2. (Geol.) 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.