noun
river terrace
A flat, step-like landform along a river valley, formed by past river erosion and deposition. Used in geography and geology.
この地域には河岸段丘が発達している。
River terraces are well developed in this area.
Compound of 河岸 (riverbank) and 段丘 (terrace). The term is a direct calque from English 'river terrace'.