anticlinal

形容词 anticlinal:

1. sloping downward away from a common crest

an.ti.cli.nal

adj.（形容词）
Sloping downward in opposite directions, as in an anticline.
背斜的：沿不同方向向下倾斜的，如在背斜地势中
Botany Of or relating to the plane of a cell division perpendicular to the surface of a plant organ.
【植物学】 垂周的：细胞壁与某植物器官表面相垂直的或有关垂周的