perpendicular
UK [ˌpɜ:.pən'dɪk.jʊ.lər] US [ˌpɝ:.pən'dɪk.ju:.lɚ] adjective formal
■at an angle of 90° to a horizontal line or surface 垂直的，成直角的•We scrambled up the nearly perpendicular side of the mountain.我们沿着几乎垂直的山坡吃力地向上爬。 ■specialized
■at an angle of 90° to another line or surface 与…垂直（或成直角）的•The wheel rotates about an axis which is perpendicular to the plane.轮子绕着一条与平面垂直的轴旋转。
UK [ˌpɜ:.pən'dɪk.jʊ.lər] US [ˌpɝ:.pən'dɪk.ju:.lɚ] noun countable specialized
■a perpendicular line 垂直线•Draw a perpendicular from the vertex of the triangle to its base.从三角形的顶点画一条垂线到底边。 the perpendicular
■a perpendicular position or direction 垂直位置；垂直方向•The wall was leaning at an angle of ten degrees to the perpendicular.墙壁倾斜，与垂直面成十度角。 |