名詞 peneplain:

1. a more or less level land surface representing and advanced stage of erosion undisturbed by crustal movements
   同義詞：peneplane

peneplain 也作 pe.ne.plane

n.Geology （名詞）【地質學】
A nearly flat land surface representing an advanced stage of erosion.
準平原：一種因晚期侵蝕作用而形成的近似平坦的地面

來源：
Latin paene, pône [almost]
拉丁語 paene, pône [幾乎]
plain
plain