peneplain noun & verb. ['pi:nɪpleɪn] Also peneplane. L19.
[from PENE- + PLAIN noun¹.]
Physical Geography.
A. noun. A low, nearly featureless tract of land of undulating relief, esp. one formed by long subaerial erosion of land undisturbed by crustal movement, representing the penultimate stage in the cycle of erosion in a humid climate; a former surface of this kind subsequently uplifted, dissected, buried, etc. L19.
B. verb trans. Erode to a peneplain. E20.

■ peneplanation [-plǝ'neɪʃ(ǝ)n] noun erosion to a peneplain L19.

[TahlilGaran] English Dictionary ▲