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planation

American  
[pley-ney-shuhn, pluh-] / pleɪˈneɪ ʃən, plə- /

noun

Geology.
  1. the process whereby an irregular land surface is made flat or level by erosion.


planation British  
/ pleɪˈneɪʃən /

noun

  1. the erosion of a land surface until it is basically flat

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of planation

First recorded in 1875–80; plane 1 + -ation

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Whenever George Washington was back at Mount Vernon, he worshiped at Pohick Church in Lorton, Va., six miles from his family planation.

From Washington Post • Mar. 15, 2023

In some cases, such as in the planation sector, older workers are compelled to regularly perform physically challenging work because younger people choose to be employed outside the sector.

From Seattle Times • Dec. 3, 2021

The check for the coconut planation will be deposited, its balance given to Ms. Dionisio’s eldest sister.

From New York Times • Mar. 22, 2020

Most of Lanai has been privately owned since the mid-1800s and was used first as a cattle ranch and then as a pineapple planation under Castle & Cooke’s Dole Foods.

From Slate • Jun. 27, 2012

When will they begin anew the work of lateral planation?

From The Elements of Geology by Norton, William Harmon

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