Peneplain

//ˈpiːnɪpleɪn// noun

Definitions

Noun
  1. 1
    A low-relief plain representing the final stage of fluvial erosion during times of extended tectonic stability.
  2. 2
    a more or less level land surface representing an advanced stage of erosion undisturbed by crustal movements wordnet

Etymology

From pene- + plain.

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