Definition of peneplain in English:

peneplain

Syllabification: pe·ne·plain
Pronunciation: /ˈpēnəˌplān
 
/
(also peneplane)

noun

Geology
A more or less level land surface produced by erosion over a long period, undisturbed by crustal movement.
More example sentences
  • Here the sequence of processes and landforms which exists between the tectonic uplift of an area and its reduction to a peneplain or erosion surface close to base level is believed to have occurred many times in certain regions.
  • the Palaeozoic Urals were eroded down to a peneplain by the end of Jurassic time, with platform sediments covering most of the orogen.
  • The south slope is generally planar except where incised by glacial or fluvial valleys and is a remnant peneplain of late Cretaceous-early Tertiary age, which is well developed in western Mongolia and adjacent regions of China.

Origin

late 19th century: from Latin paene 'almost' + plain1.

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