
A pediplain (from the Latin pes, genitive case pedis, meaning `foot`) is an extensive, slightly inclined denudation plain, which is formed under the conditions of arid and semiarid climate on the spot of an eroding mountain range or hilly relief. Formation involves the parallel retreat of slopes from the axis of valleys and connection of the sep.....
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http://en.wikipedia.org/wiki/Pediplain

(from the article `continental landform`) ...stream incision, and each utilized the concept of parallel retreat of fluvial-structural escarpments to generate plains. King designated the ... Where pedimentation occurs over broad regions, the coalesced surface is termed a pediplain. King believed that this process was responsible for many...
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http://www.britannica.com/eb/a-z/p/34

An arid landscape of little relief that is occasionally interrupted by the presence of scattered inselbergs. Formed by the coalescence of several pediments.
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http://www.physicalgeography.net/physgeoglos/p.html

In geography, a pediplain is an extensive plain formed in a desert by the coalescence of neighbouring pediments.
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http://www.probertencyclopaedia.com/browse/AP.HTM
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