Peneplain

//ˈpiːnɪpleɪn// noun

noun ·Uncommon ·Advanced level

Definitions

Noun

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

Synonyms

basin bottomland campo champaign delta desert

Etymology

From pene- + plain.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.