tetragonn.adj.

Brit.

/ˈtɛtrəɡ(ə)n/,

/ˈtɛtrəɡɒn/, U.S.

/ˈtɛtrəˌɡɑn/

Forms: Also 1600s -gone.

Etymology: < Greek τετράγωνον a quadrangle: see tetra- comb. form and -gon comb. form. So late Latin tetragōnum, French tetragone (14th cent. in Godefroy Compl.).

A. n.

1. Geometry. A figure having four angles and four sides; a quadrangle considered as one of the polygons. regular tetragon, a square.

ΘΚΠ

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

quadranglea1398

tetragon?1608

quadrilater1636

quadrilateral1648

tetragonal1684

?1608 S. Lennard tr. P. Charron Of Wisdome i. vii. 22 In figures the Pentagone conteines the Tetragone.

1690 W. Leybourn Cursus mathematicus f. 588 Half the Angle of the Tetragon or Square.

1827 O. Gregory Hutton's Course Math. (ed. 9) I. 283 An Equilateral Triangle is also a Regular Figure of three sides, and the Square is one of four: the former being also called a Trigon, and the latter a Tetragon.

a. A square fort; a quadrangular building or block of buildings. Cf. quadrangle n. 3.

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

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

1669 P. Staynred Compend. Fortification 1 in S. Sturmy Mariners Mag. A Tetragon or Square Fort.

1698 J. Fryer New Acct. E.-India & Persia 57 The Fort is a Tetragone from Corner to Corner.

1884 Daily News 5 Feb. 5/7 Populations living in immense tetragons of brick and stone.

b. A quadrangular court surrounded by buildings or walls, e.g. a college quadrangle.

3. Astrology. The aspect of two planets when they are 90° distant from one another relatively to the earth; the square or quadrate aspect.

ΘΚΠ

the world > the universe > planet > position of planet > aspect > [noun] > quadrature

quarreurea1500

quartile1517

quadrate1555

quadrature1555

tetragona1626

quadrine1628

square1667

the world > space > shape > angularity > specific angular shape > [noun] > quadrilateral

quadranglea1398

tetragona1626

quadrilateral1648

tetragonal1684

a1626 L. Andrewes Serm. (1856) I. 185 In the horoscope of Christ's nativity... Whether a trigon or no, this tetragon I am sure there was.

1728 E. Chambers Cycl. Tetragon,..an Aspect of two Planets with Regard to the Earth, when they are distant from each other a fourth Part of a Circle, or 90°... The Tetragon is express'd by the character, □.

1819 J. Wilson Compl. Dict. Astrol. Tetragonus.]

B. adj.

Four-cornered, tetragonal, quadrangular.

ΘΚΠ

the world > space > shape > angularity > specific angular shape > [adjective] > quadrilateral

four-nookedc1275

four-hernedc1290

quadrangular?a1425

four-corneredc1440

quadrangle1494

quadrivial1540

quadrangled1552

quadrilater?a1560

tetragonal1571

quadrangulate1592

quadranguled1592

quadrilateral1606

four-corner1640

tetragon1794

the world > relative properties > number > geometry > shape or figure > [adjective] > having specific property > having angles > having several angles

tetragonal1571

multangular1606

tetragon1794

vigintiangular1822

multi-angular1842

1794 J. Morse Amer. Geogr. 553 The remains of an ancient..fortification: it is now a regular tetragon terrace, about four feet high, with bastions at each angle.

This entry has not yet been fully updated (first published 1911; most recently modified version published online March 2022).

单词	tetragon
释义	tetragonn.adj. Brit. /ˈtɛtrəɡ(ə)n/, /ˈtɛtrəɡɒn/, U.S. /ˈtɛtrəˌɡɑn/ Forms: Also 1600s -gone. Etymology: < Greek τετράγωνον a quadrangle: see tetra- comb. form and -gon comb. form. So late Latin tetragōnum, French tetragone (14th cent. in Godefroy Compl.). A. n. 1. Geometry. A figure having four angles and four sides; a quadrangle considered as one of the polygons. regular tetragon, a square. ΘΚΠ the world > relative properties > number > geometry > shape or figure > [noun] > two-dimensional > quadrilateral quadranglea1398 tetragon?1608 quadrilater1636 quadrilateral1648 tetragonal1684 ?1608 S. Lennard tr. P. Charron Of Wisdome i. vii. 22 In figures the Pentagone conteines the Tetragone. 1690 W. Leybourn Cursus mathematicus f. 588 Half the Angle of the Tetragon or Square. 1827 O. Gregory Hutton's Course Math. (ed. 9) I. 283 An Equilateral Triangle is also a Regular Figure of three sides, and the Square is one of four: the former being also called a Trigon, and the latter a Tetragon. 2. a. A square fort; a quadrangular building or block of buildings. Cf. quadrangle n. 3. 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 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 1669 P. Staynred Compend. Fortification 1 in S. Sturmy Mariners Mag. A Tetragon or Square Fort. 1698 J. Fryer New Acct. E.-India & Persia 57 The Fort is a Tetragone from Corner to Corner. 1884 Daily News 5 Feb. 5/7 Populations living in immense tetragons of brick and stone. b. A quadrangular court surrounded by buildings or walls, e.g. a college quadrangle. 3. Astrology. The aspect of two planets when they are 90° distant from one another relatively to the earth; the square or quadrate aspect. ΘΚΠ the world > the universe > planet > position of planet > aspect > [noun] > quadrature quarreurea1500 quartile1517 quadrate1555 quadrature1555 tetragona1626 quadrine1628 square1667 the world > space > shape > angularity > specific angular shape > [noun] > quadrilateral quadranglea1398 tetragona1626 quadrilateral1648 tetragonal1684 a1626 L. Andrewes Serm. (1856) I. 185 In the horoscope of Christ's nativity... Whether a trigon or no, this tetragon I am sure there was. 1728 E. Chambers Cycl. Tetragon,..an Aspect of two Planets with Regard to the Earth, when they are distant from each other a fourth Part of a Circle, or 90°... The Tetragon is express'd by the character, □. 1819 J. Wilson Compl. Dict. Astrol. Tetragonus.] B. adj. Four-cornered, tetragonal, quadrangular. ΘΚΠ the world > space > shape > angularity > specific angular shape > [adjective] > quadrilateral four-nookedc1275 four-hernedc1290 quadrangular?a1425 four-corneredc1440 quadrangle1494 quadrivial1540 quadrangled1552 quadrilater?a1560 tetragonal1571 quadrangulate1592 quadranguled1592 quadrilateral1606 four-corner1640 tetragon1794 the world > relative properties > number > geometry > shape or figure > [adjective] > having specific property > having angles > having several angles tetragonal1571 multangular1606 tetragon1794 vigintiangular1822 multi-angular1842 1794 J. Morse Amer. Geogr. 553 The remains of an ancient..fortification: it is now a regular tetragon terrace, about four feet high, with bastions at each angle. This entry has not yet been fully updated (first published 1911; most recently modified version published online March 2022). < n.adj.?1608
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