/ˌpɜ:pənˈdɪkjələ(r) ||; ˌpɝpənˈdɪkjəlɚ/adj1 at an angle of 90° to sth 垂直的；成直角的: Are the lines perpendicular to each other? 这几条线互相垂直吗？ ☞Compare horizontal and vertical. 与horizontal及vertical比较。
2 pointing straight up; upright 直立的；陡峭的: The path was almost perpendicular (= it was very steep). 这条小路很陡峭。