perpendicular

vertical, perpendicular, upright, erect, plumb

名词 perpendicular:

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
   同义词：perpendicular style, English-Gothic, English-Gothic architecture
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
   同义词：plumb line
4. an extremely steep face

形容词 perpendicular:

1. intersecting at or forming right angles
2. at right angles to the plane of the horizon or a base line
   同义词：vertical
3. extremely steep

1. He'd drunk so much that he found it hard to remain perpendicular.
   他喝酒太多，简直站都站不直了。
2. The wall is a little out of the perpendicular.
   那墙有点斜。
3. There are many perpendicular marble columns in Greek temples.
   希腊庙宇有很多垂直的大理石柱。

per.pen.dic.u.lar

adj.Abbr. perp.（形容词）缩写 perp.
Mathematics Intersecting at or forming right angles.
【数学】 成直角的，垂直的：交叉成直角的，或形成直角的
Being at right angles to the horizontal; vertical.See Synonyms at vertical
竖直的，垂直的：与水平呈直角的；垂直的参见 vertical
Often Perpendicular Of or relating to a style of English Gothic architecture of the 4th and 5th centuries, characterized by emphasis of the vertical element.
常作 Perpendicular 哥特式的：与4和5世纪英国哥特式建筑风格的，或与之有关的，以强调垂直部分为特点
n.（名词）
Mathematics A line or plane perpendicular to a given line or plane.
【数学】 正交线（面）：一条或一个与给定直线或平面垂直的直线或平面
A perpendicular position.
垂直的位置
A device, such as a plumb line, used in marking the vertical from a given point.
垂规，铅垂线：一种装置，如铅垂线，用于从给定点标记竖直方向
A vertical or nearly vertical line or plane.
垂直线，垂直面：垂直或近似垂直的线或平面

来源：
Middle English perpendiculer
中古英语 perpendiculer
from Old French
源自 古法语
from Latin perpendicul3ris
源自 拉丁语 perpendicul3ris
from perpendiculum [plumb line]
源自 perpendiculum [铅垂线]
from perpendere [to weigh carefully]
源自 perpendere [仔细称量]
per- [per-]
per- [前缀，表示.通过，透过.]
pendere [to weigh] * see (s)pen-
pendere [称量] *参见 (s)pen-

【引伸】
per.pendic.ular.ity
per.pendic.ularly
adv.（副词）