perpendicular是什么意思（perpendicular的用法）

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一、perpendicular是什么意思

1、perpendicular 垂直的

2、per-,整个的，-pend,悬挂，词源同depend,pendulum.引申词义垂直的。

二、perpendicular的用法

1、perpendicular

2、perpendicular: see pendulum

3、perpendicular (adj.)

4、late 15c., from adverb (late 14c.), from Old French perpendiculer, from Latin perpendicularis "vertical, as a plumb line," from perpendiculum "plumb line," from perpendere "balance carefully," from per- "thoroughly" (see per) + pendere "to weigh, to hang" (see pendant). As a noun from 1570s. Related: Perpendicularly; perpendicularity.

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