right-angledadj.

Brit.

/ˈrʌɪtˌaŋɡld/, U.S.

/ˈraɪdˌæŋɡ(ə)ld/,

/ˌraɪdˈæŋɡ(ə)ld/

Origin: Formed within English, by compounding. Etymons: right adj., angled adj.

Etymology: < right adj. + angled adj., after right angle n. Compare slightly earlier right-cornered adj., and compare also rectangle adj. and rectangular adj., and foreign-language forms cited at those entries.

a. Having or forming one or more right angles; rectangular. Also figurative: honest, straightforward (rare); cf. square adj. 10c.

ΘΚΠ

the world > space > shape > angularity > [adjective] > constituting an angle > right > with parts or lines right-angled to each other

right-cornered1551

right-angled?a1560

rectangled1570

rectanguled1636

rectangular1703

right-angular1704

rectangulate1852

the world > relative properties > number > geometry > curve > [adjective] > of conic section > hyperbolical > of or relating to

hyperbolic1704

right-angled1749

?a1560 L. Digges Geom. Pract.: Pantometria (1571) ii. xii. sig. N ij ^v Rightangled Parallelogrammes.

1651 C. Brookes Sphær. Triangles 4 Any right-angled or quadrantal triangle proposed.

1749 B. Franklin Let. 29 July in Exper. Electricity (1751) 68 Bring this on your plate..in such a manner as that the right-angled part may be first raised.

1791 T. Paine Rights of Man i. 81 The graceful pride of truth knows no extremes, and preserves, in every latitude of life, the right-angled character of man.

1831 D. Brewster Treat. Optics xxix. 244 The apophyllite from Faroe generally crystallises in right-angled square prisms.

1883 Cent. Mag. Oct. 818/2 Long lines of olive orchard, and right-angled walls of eucalyptus trees shutting in wheat-fields.

1920 F. S. Hoyt & H. E. Peet Everyday Arithm. (rev. ed.) v. vii. 106 A triangle with one of its angles a right angle is called a right-angled triangle.

1995 Edge Nov. 66/2 Tip-toe around the track trying not to smash into the barriers on the right-angled corners.

b. Moving or lying at right angles to something.

ΘΚΠ

the world > space > relative position > position at right angles to something > [adjective]

perpendicularc1475

square?a1560

direct1563

rectangular1646

upright1678

orthogonal1694

normal1704

right-angled1802

cathetal1874

1802 Port Folio 30 Jan. 32/2 They are silent, Save when they reach the fence beneath the shade, Dragging the plough right-angled to the horse.

a1817 T. Dwight Trav. New-Eng. & N.-Y. (1821) II. 218 The streets are both parallel, and right-angled to the river.

1904 R. I. Lynch Bk. Iris 199/2 Dentate,..with sharpish teeth right-angled to the margin.

1956 Pop. Sci. Nov. 42/1 This wheel runs against a track right-angled to the rails and prevents sway.

1991 ‘E. McBain’ Widows iv. 81 The windows—one over the sink, the other on the wall right-angled to the sofa—were wide open.

2. Characterized by right angles.

ΘΚΠ

the world > space > shape > angularity > [adjective] > constituting an angle > right > characterized by right angles

right-angled1780

1780 West's Guide to Lakes (ed. 2) 62 The views from this..highest of all, when the prospect is furnished with some useful (right-angled if you will) erection of brick or stone.

1833 J. L. Motley Let. Sept. in Corr. (1889) I. ii. 28 I am settled in this most right-angled of cities.

1891 C. W. M. Moullin Surg. iii. vi. 365 Tonic shortening of the gastrocnemius (the so-called right-angled contraction of the tendo Achillis).

1963 S. Ashton-Warner Teacher 76 The right-angled leafing arrangements and the pairs of leaves set exactly opposite each other as in the Koromiko.

2000 M. Gladwell Tipping Point 207 Gordon is a striking woman..who lives in a right-angled, shag-rugged, white-stuccoed modernist masterpiece in the Hollywood Hills.

Compounds

right angled hyperbola n. Mathematics = rectangular hyperbola n. at rectangular adj. Compounds 2.

ΚΠ

1720 J. Raphson & S. Cunn tr. I. Newton Universal Arithmetick 140 Any diameter, as AB, of a right-angled hyperbola, being drawn [etc.].

1814 J. F. W. Herschel in Philos. Trans. (Royal Soc.) 104 464 If AM be a right angled hyperbola.

1896 W. R. Whitney tr. M. Le Blanc Elements Electro-chem. vi. 136 We obtain a curve as shown, which is a right-angled hyperbola.

2003 W. M. Oxbury tr. S. Mukai Introd. Invariants & Moduli i. 7 (in figure) Right angled hyperbola.

right-angled trigonometry n. Mathematics now rare trigonometry that deals with right angles and right-angled figures.

ΘΚΠ

the world > relative properties > number > geometry > [noun] > branches of > trigonometry

trigonometry1614

right-angled trigonometry?a1729

?a1729 J. Ward Posthumous Wks. (1730) i. iv. 88 In the Solution of the preceding six Cases of right-angled Trigonometry, it is to be observ'd, that the Proportions might have been varied.

1828 Moore's Pract. Navigator (ed. 20) 38 Solution of the Six Cases in Right-angled Trigonometry.

2003 Math. Gaz. 87 256 Pythagoras' theorem; right-angled trigonometry; linear factorisation [etc.].

Derivatives

ˌright-ˈangledness n. rare the quality of having or being a right angle or right angles.

ΘΚΠ

the world > space > shape > angularity > [noun] > angle or corner > right angle > quality of having right angles

rectangularity1645

right-angledness1829

1829 N. Amer. Rev. July 115 If we can perceive equilateralness and right-angledness, why may not we perceive triangleness?

1891 Athenæum 15 Aug. 215/1 The surviving Etruscan L's do not on the whole suggest right~angled-ness.

1922 E. Hungerford Our Railroads To-morrow vii. 127 The tendency toward right-angledness of the salary line between the top class of railroad personnel and the bottom.

2005 Globe & Mail (Canada) (Nexis) 21 Jan. g2 A wide external stair rising between the fifth level and the roof..provides a good moment of counterpoint to the general right-angledness of the centre.

This entry has been updated (OED Third Edition, June 2010; most recently modified version published online March 2022).

单词	right-angled
释义	right-angledadj. Brit. /ˈrʌɪtˌaŋɡld/, U.S. /ˈraɪdˌæŋɡ(ə)ld/, /ˌraɪdˈæŋɡ(ə)ld/ Origin: Formed within English, by compounding. Etymons: right adj., angled adj. Etymology: < right adj. + angled adj., after right angle n. Compare slightly earlier right-cornered adj., and compare also rectangle adj. and rectangular adj., and foreign-language forms cited at those entries. 1. a. Having or forming one or more right angles; rectangular. Also figurative: honest, straightforward (rare); cf. square adj. 10c. ΘΚΠ the world > space > shape > angularity > [adjective] > constituting an angle > right > with parts or lines right-angled to each other right-cornered1551 right-angled?a1560 rectangled1570 rectanguled1636 rectangular1703 right-angular1704 rectangulate1852 the world > relative properties > number > geometry > curve > [adjective] > of conic section > hyperbolical > of or relating to hyperbolic1704 right-angled1749 ?a1560 L. Digges Geom. Pract.: Pantometria (1571) ii. xii. sig. N ij ^v Rightangled Parallelogrammes. 1651 C. Brookes Sphær. Triangles 4 Any right-angled or quadrantal triangle proposed. 1749 B. Franklin Let. 29 July in Exper. Electricity (1751) 68 Bring this on your plate..in such a manner as that the right-angled part may be first raised. 1791 T. Paine Rights of Man i. 81 The graceful pride of truth knows no extremes, and preserves, in every latitude of life, the right-angled character of man. 1831 D. Brewster Treat. Optics xxix. 244 The apophyllite from Faroe generally crystallises in right-angled square prisms. 1883 Cent. Mag. Oct. 818/2 Long lines of olive orchard, and right-angled walls of eucalyptus trees shutting in wheat-fields. 1920 F. S. Hoyt & H. E. Peet Everyday Arithm. (rev. ed.) v. vii. 106 A triangle with one of its angles a right angle is called a right-angled triangle. 1995 Edge Nov. 66/2 Tip-toe around the track trying not to smash into the barriers on the right-angled corners. b. Moving or lying at right angles to something. ΘΚΠ the world > space > relative position > position at right angles to something > [adjective] perpendicularc1475 square?a1560 direct1563 rectangular1646 upright1678 orthogonal1694 normal1704 right-angled1802 cathetal1874 1802 Port Folio 30 Jan. 32/2 They are silent, Save when they reach the fence beneath the shade, Dragging the plough right-angled to the horse. a1817 T. Dwight Trav. New-Eng. & N.-Y. (1821) II. 218 The streets are both parallel, and right-angled to the river. 1904 R. I. Lynch Bk. Iris 199/2 Dentate,..with sharpish teeth right-angled to the margin. 1956 Pop. Sci. Nov. 42/1 This wheel runs against a track right-angled to the rails and prevents sway. 1991 ‘E. McBain’ Widows iv. 81 The windows—one over the sink, the other on the wall right-angled to the sofa—were wide open. 2. Characterized by right angles. ΘΚΠ the world > space > shape > angularity > [adjective] > constituting an angle > right > characterized by right angles right-angled1780 1780 West's Guide to Lakes (ed. 2) 62 The views from this..highest of all, when the prospect is furnished with some useful (right-angled if you will) erection of brick or stone. 1833 J. L. Motley Let. Sept. in Corr. (1889) I. ii. 28 I am settled in this most right-angled of cities. 1891 C. W. M. Moullin Surg. iii. vi. 365 Tonic shortening of the gastrocnemius (the so-called right-angled contraction of the tendo Achillis). 1963 S. Ashton-Warner Teacher 76 The right-angled leafing arrangements and the pairs of leaves set exactly opposite each other as in the Koromiko. 2000 M. Gladwell Tipping Point 207 Gordon is a striking woman..who lives in a right-angled, shag-rugged, white-stuccoed modernist masterpiece in the Hollywood Hills. Compounds right angled hyperbola n. Mathematics = rectangular hyperbola n. at rectangular adj. Compounds 2. ΚΠ 1720 J. Raphson & S. Cunn tr. I. Newton Universal Arithmetick 140 Any diameter, as AB, of a right-angled hyperbola, being drawn [etc.]. 1814 J. F. W. Herschel in Philos. Trans. (Royal Soc.) 104 464 If AM be a right angled hyperbola. 1896 W. R. Whitney tr. M. Le Blanc Elements Electro-chem. vi. 136 We obtain a curve as shown, which is a right-angled hyperbola. 2003 W. M. Oxbury tr. S. Mukai Introd. Invariants & Moduli i. 7 (in figure) Right angled hyperbola. right-angled trigonometry n. Mathematics now rare trigonometry that deals with right angles and right-angled figures. ΘΚΠ the world > relative properties > number > geometry > [noun] > branches of > trigonometry trigonometry1614 right-angled trigonometry?a1729 ?a1729 J. Ward Posthumous Wks. (1730) i. iv. 88 In the Solution of the preceding six Cases of right-angled Trigonometry, it is to be observ'd, that the Proportions might have been varied. 1828 Moore's Pract. Navigator (ed. 20) 38 Solution of the Six Cases in Right-angled Trigonometry. 2003 Math. Gaz. 87 256 Pythagoras' theorem; right-angled trigonometry; linear factorisation [etc.]. Derivatives ˌright-ˈangledness n. rare the quality of having or being a right angle or right angles. ΘΚΠ the world > space > shape > angularity > [noun] > angle or corner > right angle > quality of having right angles rectangularity1645 right-angledness1829 1829 N. Amer. Rev. July 115 If we can perceive equilateralness and right-angledness, why may not we perceive triangleness? 1891 Athenæum 15 Aug. 215/1 The surviving Etruscan L's do not on the whole suggest right~angled-ness. 1922 E. Hungerford Our Railroads To-morrow vii. 127 The tendency toward right-angledness of the salary line between the top class of railroad personnel and the bottom. 2005 Globe & Mail (Canada) (Nexis) 21 Jan. g2 A wide external stair rising between the fifth level and the roof..provides a good moment of counterpoint to the general right-angledness of the centre. This entry has been updated (OED Third Edition, June 2010; most recently modified version published online March 2022). < adj.?a1560
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