河か岸がん段だん丘きゅう

noun

river terrace

A flat, step-like landform along a river valley, formed by past river erosion and deposition. Used in geography and geology.

• この地ち域いきには河か岸がん段だん丘きゅうが発はっ達たつしている。

  River terraces are well developed in this area.