peneplain

noun

pe·​ne·​plain ˈpē-ni-ˌplān  ˈpe- 

variants or less commonly peneplane

: a land surface of considerable area and slight relief shaped by erosion

Word History

Etymology

Latin paene, pene almost + English plain or plane

First Known Use

1889, in the meaning defined above

Kids Definition

peneplain

noun

pe·​ne·​plain

variants also peneplane

ˈpēn-i-ˌplān  ˈpen- 

: a large almost flat land surface shaped by erosion