| 单词 | perpendicular |
| 释义 | perpendicular adj. & n. --adj 1. a at right angles to the plane of the horizon. b (usu. foll. by to) Geom. at right angles (to a given line, plane, or surface). 2. upright, vertical. 3. (of a slope etc.) very steep. 4. (Perpendicular) Archit. of the third stage of English Gothic (15th-16th c.) with vertical tracery in large windows. 5. joc. in a standing position. --n 1. a perpendicular line. 2. a plumb-rule or a similar instrument. 3. (prec. by the) a perpendicular line or direction (is out of the perpendicular). Derivatives perpendicularity n. perpendicularly adv. Etymology: ME f. L perpendicularis f. perpendiculum plumb-line f. PER- + pendere hang |
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