planation

[ pley-ney-shuhn, pluh- ]

noun

, Geology.

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

planation

/ pleɪˈneɪʃən /

noun

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

Word History and Origins

Origin of planation¹

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

Example Sentences

These changes probably included stream capture, flooding, drought, uplifting and planation.

From Project Gutenberg

The planation and striation of a stone need not be confined to its under surface.

From Project Gutenberg

He may have been misled by other ministers, and for his benefit I make this ex- planation.

From Project Gutenberg