Definition of planation in English:

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Pronunciation: /pləˈneɪʃ(ə)n/


[mass noun]
The levelling of a landscape by erosion.
Example sentences
  • These profiles show evidence for planation at the top of the Outer Plains close to the Inner SDR.
  • Anglo-American geomorphologists tend to the view that pediments are the result of either lateral planation by ephemeral, migrating streams issuing from bordering mountains, or sheet-flood erosion.
  • Indications of planation near the Inner SDR might either indicate that this unit formed partly under subaerial conditions (subaerial seafloor spreading) or that an uplift episode occurred after its emplacement.


Late 19th century: from plane1 + -ation.

For editors and proofreaders

Line breaks: plan|ation

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