/,pɜ:pən'dɪkjʊlə(r); ,pɝpən`dɪkjəlɚ/
adj
1 ~ (to sth) at an angle of
90 (to another line or surface) 成直角的; 垂直的
*a line drawn perpendicular to another 向一线引一垂线.
2 at a right angle to the horizontal; upright 竖立的; 直立的
*the perpendicular marble columns of a Greek temple 希腊庙宇直立的大理石柱.
3 (of a cliff, rock-face, etc) rising very steeply （指悬崖、石壁等）陡峭的, 壁立的
*The valley ended in a perpendicular rim of granite. 那山谷的尽头是花岗石的断崖.
4 (also Perpendicular) (architecture 建) of the style of English Gothic architecture in the 14th and 15th centuries, characterized by the use of vertical lines in its decoration 垂直式的（14-15世纪英国哥特式建筑风格的）.

n
1 [C] perpendicular line 垂直线.
2 (also the perpendicular) [U] perpendicular position or direction 垂直; 垂直方向
*The wall is a little out of (the) perpendicular. 那墙有点倾斜.