| 释义 |
perpendicularity|pɜːpəndɪkjuːˈlærɪtɪ|
[f. L. type *perpendiculāritās, f. perpendiculār-is: see prec. and -ity. Cf. mod.F. perpendicularité (1741 in Dict. Acad.), Sp., It. perpendicularità.]
1. Vertical or upright position; upright attitude or posture; verticality.
1589Puttenham Eng. Poesie ii. x. (Arb.) 102 In buildings of stone or bricke the mason giueth a band..to hold in the worke fast and maintaine the perpendicularitie of the wall. 1664Power Exp. Philos. ii. 110 Pendents..multiply their undulations before they rest in their desired Perpendicularity. 1760Stiles in Phil. Trans. LII. 42 The column supported its perpendicularity near a quarter of an hour. 1874Parker Goth. Archit. ii. vi. 195 Perpendicularity is..the characteristic of these windows. 1874T. Hardy Madding Crowd xviii, His square-framed perpendicularity showed more fully now than in the crowd and bustle of the market-house.
2. Geom. Position or direction at right angles to a given line, surface, or plane.
1725Watts Logic i. ii. §3 The perpendicularity of these lines to each other, is the difference of a right angle. 1841J. R. Young Math. Dissert. ii. 73 They preserve their perpendicularity to one another. 1872Proctor Ess. Astron. xxv. 321 Perpendicularity of intersection. |