perpendicular

英 [,pɜːp(ə)n'dɪkjʊlə] 美['pɝpən'dɪkjəlɚ]

• adj. 垂直的，正交的；直立的；陡峭的
• n. 垂线；垂直的位置

1. a straight line at right angles to another line

2. a Gothic style in 14th and 15th century England; characterized by vertical lines and a four-centered (Tudor) arch and fan vaulting

3. a cord from which a metal weight is suspended pointing directly to the earth's center of gravity; used to determine the vertical from a given point

4. an extremely steep face