octagonn.adj.

Brit.

/ˈɒktəɡ(ə)n/, U.S.

/ˈɑktəˌɡɑn/

Forms: 1600s octagone, 1600s–1700s octogon, 1600s–1700s octogone, 1600s– octagon; also Scottish pre-1700 octoagon.

Origin: Of multiple origins. Partly a borrowing from Latin. Partly a borrowing from Greek. Etymons: Latin octagōnon; Greek ὀκτάγωνον, ὀκτάγωνος.

Etymology: < classical Latin octagōnon, octōgōnon octagon and its etymon ancient Greek ὀκτάγωνον octagon, use as noun of neuter singular of Hellenistic Greek ὀκτάγωνος eight-cornered (although this is first attested later) < ancient Greek ὀκτα- octa- comb. form + stem of γωνία corner, angle (see -gon comb. form). With use as adjective compare Hellenistic Greek ὀκτάγωνος , classical Latin octagōnos , octōgōnos . Compare Middle French, French octogone , noun (1484) and adjective (1547), Middle French octagone , adjective (1596), Italian ottagono , noun (a1572; a1492 as octagono ) and adjective (1547), Spanish octágono , octógono , noun (1733 or earlier). Compare earlier octagonal adj.

A. n.

1. A plane geometrical figure with eight straight sides and eight angles. Also: a building or object of octagonal form or cross-section.

ΘΚΠ

the world > space > shape > angularity > specific angular shape > [noun] > polygon > octagon

octagon1594

octangle1651

eight-square1794

the world > relative properties > number > geometry > shape or figure > [noun] > two-dimensional > octagon

octagon1594

octangle1651

eight-square1794

1594 in A. I. Cameron Warrender Papers (1932) II. 260 Table formed of thrie partis of octoagon.

1639 R. Ward Animadversions of Warre i. iii. xii. 39 The third Regular Figure is termed Octagon, because it containes eight sides, the Circumference being divided by eight points of equall distance.

1656 T. Blount Glossographia Octogon, a figure consisting of eight Angles.

1660 tr. I. Barrow Euclide's Elements iv. 85 Then will AB be the side of an Octagone.

1674 A. Cremer tr. J. Scheffer Hist. Lapland xvi. 84 They [sc. the tents] were octogons somewhat broader towards the bottom.

1757 R. Pococke Trav. (1889) II. 284 A tower at each corner, which..are octagons.

1790 Philos. Trans. (Royal Soc.) 80 137 Over the top of the stand lies another plane of mahogany, likewise an octagon, of somewhat greater dimensions than the former.

1868 Morning Star 26 Mar. The ceiling of the room is coffered in octagons geometrically arranged.

1899 Science 25 Aug. 232/2 There are, however, many groups of earthworks which, although usually classed as mounds, are of an entirely different order of structure and must be considered by themselves. To this class belong the great embankments, often in the form of squares, octagons, ovals and circles.

1946 Amer. Jrnl. Bot. 33 822/1 Thus far the faces range from quadrilaterals to octagons.

1989 Japan Times 21 May 11/4 At the Touko the core of the arrangement is the octagon, which gives somewhat the effect of a central lobby.

1991 C. B. Boyer & U. C. Merzbach Hist. Math. (ed. 2) viii. 135 The resulting figure will be a semiregular or Archimedean solid with surfaces made up of eight equilateral triangles and six regular octagons.

†2. Fortification. A fort having eight bastions. Obsolete.

ΘΚΠ

society > armed hostility > defence > defensive work(s) > fort or fortified town > [noun] > fort according to shape

pentagonon1625

star-sconce1632

octagon1648

pentagon1648

hexagon1669

star fort1669

tetragon1669

star1672

star redoubt1687

trigon1688

1648 B. Gerbier Interpreter Acad. Forrain Langs. ii. 9 All figures take their name, either from the number of angles or from the sid's, from thence comes the Greek [name of].Octogone,..which is to say a Fortification of..8..angles, sid's or Bastions.

1706 Phillips's New World of Words (new ed.) Octagon, a figure consisting of eight angles and sides; and when all the sides and angles are equal, 'tis call'd a Regular Octagon, which is capable of being fortify'd with the like number of bastions.

1728 E. Chambers Cycl. Octagon, in fortification, is a Place that has eight Bastions.

3. (The name of) an octagonal building in Liverpool, used as a place of worship by a dissenting sect in the late 18th cent. rare.

ΘΚΠ

society > inhabiting and dwelling > inhabited place > a building > building of specific shape > [noun]

quadrangle1596

rotund1606

rotundo1614

camera1633

rotunda1648

tholosc1660

umbrella1680

octagon1767

round tower1790

cone1791

flat-iron1862

tetragon1884

tempietto1896

tetrapylon1904

igloo1956

shoebox1968

1767 J. Wedgwood Let. 8 Nov. in Sel. Lett. (1965) 46 Can you part from your Octogon, and enlightened Octogonian bretheren, to join the diminutive and weak society of a Country Chapel?

1902 N.E.D. at Octagonian Applied to a Dissenting congregation in Liverpool, worshipping in a building known from its shape as the Octagon.

B. adj.

= octagonal adj.

ΘΚΠ

the world > space > shape > angularity > specific angular shape > [adjective] > polygonal > octagonal

eight-squarea1552

octagonal1571

octagonian1598

octangle1613

octangular1649

octagon1679

octolateral1890

the world > relative properties > number > geometry > shape or figure > [adjective] > two-dimensional > octagonal

eight-squarea1552

octagonal1571

octagonian1598

octangle1613

octangular1649

octagon1679

1679 M. Rusden Further Discov. Bees 81 The form is octagon or eight square.

1774 Westm. Mag. 2 316 A..magnificent octogon hall.

1780 H. Walpole Vertue's Anecd. Painting (ed. 2) IV. vi. 110 The octagon buildings at each end.

1808 W. Scott Marmion v. xxv. 279 Dun-Edin's cross, a pillar'd stone, Rose on a turret octagon.

1862 M. E. Braddon Lady Audley's Secret I. vii. 120 An octagon antechamber.

1977 R. Lyle & P. H. Simpson Archit. Hist. Lexington 226 The Executive Mansion, with its twin octagon towers flanking the front umbrage.

Compounds

C1.

† octagon-faced adj. [after double-faced adj., two-faced adj.] Obsolete able to show eight different faces, extremely duplicitous.Apparently an isolated use.

ΚΠ

1892 ‘B. Hinton’ Lord's Return 203 This personage must be octagon-faced, at the least.

C2.

† octagon-stitch n. Obsolete a kind of stitch used in crochet.

ΘΚΠ

the world > textiles and clothing > textiles > textile fabric or an article of textile fabric > textile fabric > textile fabric manufactured in specific way > [noun] > consisting of loops or looped stitches > crochet > stitch or stitches

tambour-stitchc1840

spot stitch1865

treble1872

foundation-chain1882

octagon-stitch1885

1885 F. H. Burnett Theo (1888) iv. 81 I will show you how to do the octagon-stitch.

This entry has been updated (OED Third Edition, March 2004; most recently modified version published online March 2022).

单词	octagon
释义	octagonn.adj. Brit. /ˈɒktəɡ(ə)n/, U.S. /ˈɑktəˌɡɑn/ Forms: 1600s octagone, 1600s–1700s octogon, 1600s–1700s octogone, 1600s– octagon; also Scottish pre-1700 octoagon. Origin: Of multiple origins. Partly a borrowing from Latin. Partly a borrowing from Greek. Etymons: Latin octagōnon; Greek ὀκτάγωνον, ὀκτάγωνος. Etymology: < classical Latin octagōnon, octōgōnon octagon and its etymon ancient Greek ὀκτάγωνον octagon, use as noun of neuter singular of Hellenistic Greek ὀκτάγωνος eight-cornered (although this is first attested later) < ancient Greek ὀκτα- octa- comb. form + stem of γωνία corner, angle (see -gon comb. form). With use as adjective compare Hellenistic Greek ὀκτάγωνος , classical Latin octagōnos , octōgōnos . Compare Middle French, French octogone , noun (1484) and adjective (1547), Middle French octagone , adjective (1596), Italian ottagono , noun (a1572; a1492 as octagono ) and adjective (1547), Spanish octágono , octógono , noun (1733 or earlier). Compare earlier octagonal adj. A. n. 1. A plane geometrical figure with eight straight sides and eight angles. Also: a building or object of octagonal form or cross-section. ΘΚΠ the world > space > shape > angularity > specific angular shape > [noun] > polygon > octagon octagon1594 octangle1651 eight-square1794 the world > relative properties > number > geometry > shape or figure > [noun] > two-dimensional > octagon octagon1594 octangle1651 eight-square1794 1594 in A. I. Cameron Warrender Papers (1932) II. 260 Table formed of thrie partis of octoagon. 1639 R. Ward Animadversions of Warre i. iii. xii. 39 The third Regular Figure is termed Octagon, because it containes eight sides, the Circumference being divided by eight points of equall distance. 1656 T. Blount Glossographia Octogon, a figure consisting of eight Angles. 1660 tr. I. Barrow Euclide's Elements iv. 85 Then will AB be the side of an Octagone. 1674 A. Cremer tr. J. Scheffer Hist. Lapland xvi. 84 They [sc. the tents] were octogons somewhat broader towards the bottom. 1757 R. Pococke Trav. (1889) II. 284 A tower at each corner, which..are octagons. 1790 Philos. Trans. (Royal Soc.) 80 137 Over the top of the stand lies another plane of mahogany, likewise an octagon, of somewhat greater dimensions than the former. 1868 Morning Star 26 Mar. The ceiling of the room is coffered in octagons geometrically arranged. 1899 Science 25 Aug. 232/2 There are, however, many groups of earthworks which, although usually classed as mounds, are of an entirely different order of structure and must be considered by themselves. To this class belong the great embankments, often in the form of squares, octagons, ovals and circles. 1946 Amer. Jrnl. Bot. 33 822/1 Thus far the faces range from quadrilaterals to octagons. 1989 Japan Times 21 May 11/4 At the Touko the core of the arrangement is the octagon, which gives somewhat the effect of a central lobby. 1991 C. B. Boyer & U. C. Merzbach Hist. Math. (ed. 2) viii. 135 The resulting figure will be a semiregular or Archimedean solid with surfaces made up of eight equilateral triangles and six regular octagons. †2. Fortification. A fort having eight bastions. Obsolete. ΘΚΠ society > armed hostility > defence > defensive work(s) > fort or fortified town > [noun] > fort according to shape pentagonon1625 star-sconce1632 octagon1648 pentagon1648 hexagon1669 star fort1669 tetragon1669 star1672 star redoubt1687 trigon1688 1648 B. Gerbier Interpreter Acad. Forrain Langs. ii. 9 All figures take their name, either from the number of angles or from the sid's, from thence comes the Greek [name of].Octogone,..which is to say a Fortification of..8..angles, sid's or Bastions. 1706 Phillips's New World of Words (new ed.) Octagon, a figure consisting of eight angles and sides; and when all the sides and angles are equal, 'tis call'd a Regular Octagon, which is capable of being fortify'd with the like number of bastions. 1728 E. Chambers Cycl. Octagon, in fortification, is a Place that has eight Bastions. 3. (The name of) an octagonal building in Liverpool, used as a place of worship by a dissenting sect in the late 18th cent. rare. ΘΚΠ society > inhabiting and dwelling > inhabited place > a building > building of specific shape > [noun] quadrangle1596 rotund1606 rotundo1614 camera1633 rotunda1648 tholosc1660 umbrella1680 octagon1767 round tower1790 cone1791 flat-iron1862 tetragon1884 tempietto1896 tetrapylon1904 igloo1956 shoebox1968 1767 J. Wedgwood Let. 8 Nov. in Sel. Lett. (1965) 46 Can you part from your Octogon, and enlightened Octogonian bretheren, to join the diminutive and weak society of a Country Chapel? 1902 N.E.D. at Octagonian Applied to a Dissenting congregation in Liverpool, worshipping in a building known from its shape as the Octagon. B. adj. = octagonal adj. ΘΚΠ the world > space > shape > angularity > specific angular shape > [adjective] > polygonal > octagonal eight-squarea1552 octagonal1571 octagonian1598 octangle1613 octangular1649 octagon1679 octolateral1890 the world > relative properties > number > geometry > shape or figure > [adjective] > two-dimensional > octagonal eight-squarea1552 octagonal1571 octagonian1598 octangle1613 octangular1649 octagon1679 1679 M. Rusden Further Discov. Bees 81 The form is octagon or eight square. 1774 Westm. Mag. 2 316 A..magnificent octogon hall. 1780 H. Walpole Vertue's Anecd. Painting (ed. 2) IV. vi. 110 The octagon buildings at each end. 1808 W. Scott Marmion v. xxv. 279 Dun-Edin's cross, a pillar'd stone, Rose on a turret octagon. 1862 M. E. Braddon Lady Audley's Secret I. vii. 120 An octagon antechamber. 1977 R. Lyle & P. H. Simpson Archit. Hist. Lexington 226 The Executive Mansion, with its twin octagon towers flanking the front umbrage. Compounds C1. † octagon-faced adj. [after double-faced adj., two-faced adj.] Obsolete able to show eight different faces, extremely duplicitous.Apparently an isolated use. ΚΠ 1892 ‘B. Hinton’ Lord's Return 203 This personage must be octagon-faced, at the least. C2. † octagon-stitch n. Obsolete a kind of stitch used in crochet. ΘΚΠ the world > textiles and clothing > textiles > textile fabric or an article of textile fabric > textile fabric > textile fabric manufactured in specific way > [noun] > consisting of loops or looped stitches > crochet > stitch or stitches tambour-stitchc1840 spot stitch1865 treble1872 foundation-chain1882 octagon-stitch1885 1885 F. H. Burnett Theo (1888) iv. 81 I will show you how to do the octagon-stitch. This entry has been updated (OED Third Edition, March 2004; most recently modified version published online March 2022). < n.adj.1594
随便看	ergocalciferol ergocalciferols ergocornine ergocryptine ergodic ergodicities ergodicity ergoer ergoest ergogenic ergogram ergograms ergograph ergographic ergographs ergography ergoism ergometer ergometers ergometric ergometrine ergonist ergonomic ergonomically ergonomics