peneplain

(nə plān′, penə-)

or peneplane

noun

land worn down by erosion almost to a level plain

Origin: L pene, paene, almost (see passion) + plain, plane

See peneplain in American Heritage Dictionary 4

also pe·ne·plane

noun
A nearly flat land surface representing an advanced stage of erosion.

Origin:

Origin: pene-, almost (from Latin paene)

Origin: + plain

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