diagonaladj.n.

/dʌɪˈaɡənəl/

Etymology: < Latin diagōnālis (Vitruvius), < Greek διαγώνιος from angle to angle, < διά across + γωνία angle: see -al suffix¹ 1. Compare French diagonal (13th cent. in Littré).

A. adj.

1. Geometry. Extending, as a line, from any angular point of a quadrilateral or multilateral figure to an opposite or non-adjacent angular point. (Also applied to a plane extending from one edge of a solid figure to the opposite edge.) Hence gen. Extending from one corner of anything to the opposite corner.

ΘΚΠ

the world > space > relative position > inclination > [adjective] > diagonal

diagonal?1541

diagonic1592

diagonial1624

cater-cornered1838

catering1875

?1541 [implied in: R. Copland Guy de Chauliac's Questyonary Cyrurgyens ii. sig. Iiv^v Two longe wayes that descende fro the kydnees that entre by the sydes of the bladder dyagonnelly. (at diagonally adv.)].

1563 J. Shute First Groundes Archit. sig. Civ The diagonall line marked B.

1570 H. Billingsley tr. Comte de Candale in tr. Euclid Elements Geom. xi. f. 354 Diagonall lines drawen from the opposite angles.

1660 tr. H. Blum Bk. Five Collumnes Archit. (new ed.) A b The square..crossed with two Diagonall lines.

1823 H. J. Brooke Familiar Introd. Crystallogr. 12 The diagonal plane of a solid..is an imaginary plane passing through the diagonal lines of two exterior parallel planes.

1859 R. F. Burton Lake Regions Central Afr. in Jrnl. Royal Geogr. Soc. 29 156 From east to west the diagonal breadth of Mgunda Mk'hali is 140 miles.

2. More loosely: Having an oblique direction like the diagonal of a square or other parallelogram; lying or passing athwart; inclined at an angle other than a right angle (usually about 45°).

ΘΚΠ

the world > space > direction > specific directions > [adjective] > extending across > diagonally

diagonal1665

cater-cornered1838

the world > space > relative position > inclination > [adjective]

embelifc1400

inclining?c1400

oblique?a1425

inclinate?1440

hieldingc1480

inclined?a1500

bias1551

overthwart1594

sidelong1598

squinty1598

skew1609

traverse1609

skewed1611

obliquous1614

squint1703

inclinated1751

slanting1768

slanted1770

slant1776

aslant1791

diagonal1796

rakish1830

slantindicular1832

slantwise1856

slaunchways1913

slanty1928

the world > movement > motion in a certain direction > sideways movement or a sideways movement > [adjective] > oblique in motion

embelifc1400

sklenting1568

diagonial1624

slanta1630

biasing1636

slanting1688

sidelong1695

diagonal1796

diagonic1881

1665 [see diagonal-wise adv. at Compounds].

1796 Instr. & Regulations Cavalry 77 By the diagonal march of divisions either to front or rear.

1821 W. M. Craig Lect. Drawing vi. 350 A supposed diagonal line from the outer corner of each eye.

1831 D. Lardner Pneumatics iv. 257 Every change in the position of the surface of the mercury..will be three times as great in the diagonal barometer as it would be in the vertical one.

1851 H. T. De la Beche Geol. Observer 612 Diagonal arrangements of the minor parts..are very common in many sandstones.

1867 W. H. Smyth & E. Belcher Sailor's Word-bk. Diagonal braces, knees, planks, etc. are such as cross a vessel's timbers obliquely.

1876 G. D. Mathews Coinages of World i. 7 On some English coins of last century the milling is diagonal to the edge.

3. Marked with diagonal or oblique lines, or having some part placed diagonally or obliquely. diagonal bellows: a bellows (in an organ) having its sides inclined at an angle. diagonal cloth: a twilled fabric having the ridges diagonal, i.e. running obliquely to the lists. diagonal couching (in needlework): couching in which the stitches form a zig-zag pattern. diagonal scale: a scale marked with equidistant parallel lines crossed at right angles by others at smaller intervals (e.g. ¹/ ₁₀ of the larger), and having one of the larger divisions additionally crossed by parallels obliquely placed; used for measurement of small fractions (e.g. hundredths) of the unit of length.

ΚΠ

a1679 J. Moore New Syst. Math. (1681) 224 Then taking 1 or 10 from any line of equal parts or Diagonal Scale, prick it on AD six times.

1824 H. W. Reveley in T. Gill Techn. Repository VI. xli. 199 The total expense of laying down the proposed Diagonal Pavement in the streets of London..would probably not exceed 10s. 6d. per square yard.

1876 J. Hiles Catech. Organ (1878) viii. 52 Afterwards diagonal or wedge-shaped bellows came into use.

1879 H. N. Moseley Notes by Naturalist on ‘Challenger’ 473 A wide patch of diagonal ornamentation upon the abdomen.

1882 S. F. A. Caulfeild & B. C. Saward Dict. Needlework 152 Diagonal couching..is chiefly employed in Church Work.

1883 A. E. Seaton Man. Marine Engin. 55 Any engine whose cylinders are not perfectly horizontal may..be called Diagonal.

B. n.

a. Geometry. A diagonal line; a straight line joining any two opposite or non-adjacent angles of a rectilineal figure (or of a solid contained by planes).

ΘΚΠ

the world > relative properties > number > geometry > line > [noun] > diagonal

bias1530

diagonal1571

diagon1656

diagonial1668

diagony1690

1563 J. Shute First Groundes Archit. sig. Cii^v A lyne ouerthwart from the one corner to the other, which line is called Dyagonalis.]

1571 T. Digges in L. Digges's Geom. Pract.: Pantometria v. sig. Viv Wherby the diagonal exceedeth the side pentagonal.

a1679 T. Hobbes Seven Philos. Probl. (1682) viii. 76 You pitched upon half the Diagonal for your Foundation.

1827 O. Gregory Hutton's Course Math. (ed. 9) I. 322 The rectangle of the two diagonals of any quadrangle inscribed in a circle.

1834 T. Carlyle Sartor Resartus i. vii. 18/1 A square Blanket, twelve feet in diagonal.

1850 Ld. Tennyson Princess (ed. 3) Concl. 172 Betwixt them both, to please them both, And yet to give the story as it rose, I moved as in a strange diagonal, And maybe neither pleased myself nor them.

1871 J. Tyndall Fragm. Sci. (1879) I. iv. 115 The short diagonal of the large Nicol [prism] was in the first instance vertical.

b. A diagonal ‘line’ or row of things arranged in a square or other parallelogram (e.g. of squares on a chessboard).

c. A part of any structure, as a beam, plank, etc., placed diagonally.

ΘΚΠ

the world > space > relative position > inclination > [noun] > that which inclines > part placed diagonally

diagonal1837

1837 C. R. Goring & A. Pritchard Micrographia 112 The light stopped by the diagonals of the engiscope.

1853 H. Douglas Ess. Mil. Bridges (ed. 3) vii. 330 The diagonals b c, b′ c′, having the quality of ties.

1874 E. H. Knight Amer. Mech. Dict. I. 691/2 Diagonal,..a timber brace, knee, plank, truss, etc., crossing a vessel's timbers obliquely.

2. = diagonal cloth at sense A. 3: (a) a soft material used for embroidery; (b) a black coating for men's wear.

ΘΚΠ

the world > textiles and clothing > textiles > textile fabric or an article of textile fabric > textile fabric > textile fabric manufactured in specific way > [noun] > twilled > specific

Venetian1710

Venetian clothc1790

gambroon1858

diagonal1861

zanella1876

cavalry twill1942

1861 A. Ure Cotton Manuf. Great Brit. (ed. 2) II. 259 A fustian, with a small cord running in an oblique direction..is called diagonal.

1878 A. Barlow Hist. & Princ. Weaving Gloss Diagonals, fancy lozenge pattern cloths.

1883 Daily News 19 Sept. 6/6 Thin meltons, diagonals, and serges.

1890 R. Beaumont Colour in Woven Design 268 Diagonals are but plainly coloured.

Compounds

diagonal-built adj. (a boat or ship) having the outer skin consisting of two layers of planking making angles of about 45° with the keel in opposite directions.

ΚΠ

1869 R. W. Meade Treat. Naval Archit. & Ship-building (ed. 2) 416 In diagonal-built boats the skin consists of two layers of planking.

diagonal-planed adj. (see quot. 1816).

ΚΠ

1816 R. Jameson Treat. External Characters Minerals (ed. 2) 207 A Crystal is said to be diagonal planed (plagiedre), when it has facets..situated obliquely.

diagonal-wise adv. = diagonally adv.

ΘΚΠ

the world > space > relative position > inclination > [adverb] > diagonally

acrossa1350

cornerwise1474

diagonally?1541

diagonially1646

diagonal-wise1665

bias-way1702

1665 Philos. Trans. (Royal Soc.) 1 84 They may make up a Cylinder cut Diagonal wise.

This entry has not yet been fully updated (first published 1895; most recently modified version published online March 2022).

单词	diagonal
释义	diagonaladj.n. /dʌɪˈaɡənəl/ Etymology: < Latin diagōnālis (Vitruvius), < Greek διαγώνιος from angle to angle, < διά across + γωνία angle: see -al suffix¹ 1. Compare French diagonal (13th cent. in Littré). A. adj. 1. Geometry. Extending, as a line, from any angular point of a quadrilateral or multilateral figure to an opposite or non-adjacent angular point. (Also applied to a plane extending from one edge of a solid figure to the opposite edge.) Hence gen. Extending from one corner of anything to the opposite corner. ΘΚΠ the world > space > relative position > inclination > [adjective] > diagonal diagonal?1541 diagonic1592 diagonial1624 cater-cornered1838 catering1875 ?1541 [implied in: R. Copland Guy de Chauliac's Questyonary Cyrurgyens ii. sig. Iiv^v Two longe wayes that descende fro the kydnees that entre by the sydes of the bladder dyagonnelly. (at diagonally adv.)]. 1563 J. Shute First Groundes Archit. sig. Civ The diagonall line marked B. 1570 H. Billingsley tr. Comte de Candale in tr. Euclid Elements Geom. xi. f. 354 Diagonall lines drawen from the opposite angles. 1660 tr. H. Blum Bk. Five Collumnes Archit. (new ed.) A b The square..crossed with two Diagonall lines. 1823 H. J. Brooke Familiar Introd. Crystallogr. 12 The diagonal plane of a solid..is an imaginary plane passing through the diagonal lines of two exterior parallel planes. 1859 R. F. Burton Lake Regions Central Afr. in Jrnl. Royal Geogr. Soc. 29 156 From east to west the diagonal breadth of Mgunda Mk'hali is 140 miles. 2. More loosely: Having an oblique direction like the diagonal of a square or other parallelogram; lying or passing athwart; inclined at an angle other than a right angle (usually about 45°). ΘΚΠ the world > space > direction > specific directions > [adjective] > extending across > diagonally diagonal1665 cater-cornered1838 the world > space > relative position > inclination > [adjective] embelifc1400 inclining?c1400 oblique?a1425 inclinate?1440 hieldingc1480 inclined?a1500 bias1551 overthwart1594 sidelong1598 squinty1598 skew1609 traverse1609 skewed1611 obliquous1614 squint1703 inclinated1751 slanting1768 slanted1770 slant1776 aslant1791 diagonal1796 rakish1830 slantindicular1832 slantwise1856 slaunchways1913 slanty1928 the world > movement > motion in a certain direction > sideways movement or a sideways movement > [adjective] > oblique in motion embelifc1400 sklenting1568 diagonial1624 slanta1630 biasing1636 slanting1688 sidelong1695 diagonal1796 diagonic1881 1665 [see diagonal-wise adv. at Compounds]. 1796 Instr. & Regulations Cavalry 77 By the diagonal march of divisions either to front or rear. 1821 W. M. Craig Lect. Drawing vi. 350 A supposed diagonal line from the outer corner of each eye. 1831 D. Lardner Pneumatics iv. 257 Every change in the position of the surface of the mercury..will be three times as great in the diagonal barometer as it would be in the vertical one. 1851 H. T. De la Beche Geol. Observer 612 Diagonal arrangements of the minor parts..are very common in many sandstones. 1867 W. H. Smyth & E. Belcher Sailor's Word-bk. Diagonal braces, knees, planks, etc. are such as cross a vessel's timbers obliquely. 1876 G. D. Mathews Coinages of World i. 7 On some English coins of last century the milling is diagonal to the edge. 3. Marked with diagonal or oblique lines, or having some part placed diagonally or obliquely. diagonal bellows: a bellows (in an organ) having its sides inclined at an angle. diagonal cloth: a twilled fabric having the ridges diagonal, i.e. running obliquely to the lists. diagonal couching (in needlework): couching in which the stitches form a zig-zag pattern. diagonal scale: a scale marked with equidistant parallel lines crossed at right angles by others at smaller intervals (e.g. ¹/ ₁₀ of the larger), and having one of the larger divisions additionally crossed by parallels obliquely placed; used for measurement of small fractions (e.g. hundredths) of the unit of length. ΚΠ a1679 J. Moore New Syst. Math. (1681) 224 Then taking 1 or 10 from any line of equal parts or Diagonal Scale, prick it on AD six times. 1824 H. W. Reveley in T. Gill Techn. Repository VI. xli. 199 The total expense of laying down the proposed Diagonal Pavement in the streets of London..would probably not exceed 10s. 6d. per square yard. 1876 J. Hiles Catech. Organ (1878) viii. 52 Afterwards diagonal or wedge-shaped bellows came into use. 1879 H. N. Moseley Notes by Naturalist on ‘Challenger’ 473 A wide patch of diagonal ornamentation upon the abdomen. 1882 S. F. A. Caulfeild & B. C. Saward Dict. Needlework 152 Diagonal couching..is chiefly employed in Church Work. 1883 A. E. Seaton Man. Marine Engin. 55 Any engine whose cylinders are not perfectly horizontal may..be called Diagonal. B. n. 1. a. Geometry. A diagonal line; a straight line joining any two opposite or non-adjacent angles of a rectilineal figure (or of a solid contained by planes). ΘΚΠ the world > relative properties > number > geometry > line > [noun] > diagonal bias1530 diagonal1571 diagon1656 diagonial1668 diagony1690 1563 J. Shute First Groundes Archit. sig. Cii^v A lyne ouerthwart from the one corner to the other, which line is called Dyagonalis.] 1571 T. Digges in L. Digges's Geom. Pract.: Pantometria v. sig. Viv Wherby the diagonal exceedeth the side pentagonal. a1679 T. Hobbes Seven Philos. Probl. (1682) viii. 76 You pitched upon half the Diagonal for your Foundation. 1827 O. Gregory Hutton's Course Math. (ed. 9) I. 322 The rectangle of the two diagonals of any quadrangle inscribed in a circle. 1834 T. Carlyle Sartor Resartus i. vii. 18/1 A square Blanket, twelve feet in diagonal. 1850 Ld. Tennyson Princess (ed. 3) Concl. 172 Betwixt them both, to please them both, And yet to give the story as it rose, I moved as in a strange diagonal, And maybe neither pleased myself nor them. 1871 J. Tyndall Fragm. Sci. (1879) I. iv. 115 The short diagonal of the large Nicol [prism] was in the first instance vertical. b. A diagonal ‘line’ or row of things arranged in a square or other parallelogram (e.g. of squares on a chessboard). c. A part of any structure, as a beam, plank, etc., placed diagonally. ΘΚΠ the world > space > relative position > inclination > [noun] > that which inclines > part placed diagonally diagonal1837 1837 C. R. Goring & A. Pritchard Micrographia 112 The light stopped by the diagonals of the engiscope. 1853 H. Douglas Ess. Mil. Bridges (ed. 3) vii. 330 The diagonals b c, b′ c′, having the quality of ties. 1874 E. H. Knight Amer. Mech. Dict. I. 691/2 Diagonal,..a timber brace, knee, plank, truss, etc., crossing a vessel's timbers obliquely. 2. = diagonal cloth at sense A. 3: (a) a soft material used for embroidery; (b) a black coating for men's wear. ΘΚΠ the world > textiles and clothing > textiles > textile fabric or an article of textile fabric > textile fabric > textile fabric manufactured in specific way > [noun] > twilled > specific Venetian1710 Venetian clothc1790 gambroon1858 diagonal1861 zanella1876 cavalry twill1942 1861 A. Ure Cotton Manuf. Great Brit. (ed. 2) II. 259 A fustian, with a small cord running in an oblique direction..is called diagonal. 1878 A. Barlow Hist. & Princ. Weaving Gloss Diagonals, fancy lozenge pattern cloths. 1883 Daily News 19 Sept. 6/6 Thin meltons, diagonals, and serges. 1890 R. Beaumont Colour in Woven Design 268 Diagonals are but plainly coloured. Compounds diagonal-built adj. (a boat or ship) having the outer skin consisting of two layers of planking making angles of about 45° with the keel in opposite directions. ΚΠ 1869 R. W. Meade Treat. Naval Archit. & Ship-building (ed. 2) 416 In diagonal-built boats the skin consists of two layers of planking. diagonal-planed adj. (see quot. 1816). ΚΠ 1816 R. Jameson Treat. External Characters Minerals (ed. 2) 207 A Crystal is said to be diagonal planed (plagiedre), when it has facets..situated obliquely. diagonal-wise adv. = diagonally adv. ΘΚΠ the world > space > relative position > inclination > [adverb] > diagonally acrossa1350 cornerwise1474 diagonally?1541 diagonially1646 diagonal-wise1665 bias-way1702 1665 Philos. Trans. (Royal Soc.) 1 84 They may make up a Cylinder cut Diagonal wise. This entry has not yet been fully updated (first published 1895; most recently modified version published online March 2022). < adj.n.?1541
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