nonagonn.adj.

Brit.

/ˈnɒnəɡɒn/,

/ˈnɒnəɡ(ə)n/, U.S.

/ˈnɑnəˌɡɑn/,

/ˈnoʊnəˌɡɑn/

Origin: Formed within English, by compounding. Etymons: nona- comb. form, -gon comb. form.

Etymology: < nona- comb. form + -gon comb. form. Compare Middle French nonogone (16th cent.).This is a hybrid formation, with a first element of Latin origin and a second element of Greek origin; compare enneagon n.

Geometry.

A. n.

A plane figure with nine straight sides and nine angles.

ΘΚΠ

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

nonagon1639

enneagon1660

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

nonagon1639

enneagon1660

1639 R. Ward Animadversions of Warre i. iii. xii. 39 Nonagon, is a Figure of nine sides.

1688 R. Holme Acad. Armory (1905) iii. xvi. 98/1 An Henneagon, or Enneagon or Nonagon, a fort of nyne corners.

1705 E. Scarburgh Eng. Euclide 174 Of the..Nonagon, Euclide makes no mention.

1817 H. T. Colebrooke tr. Bhāskara Āchārya in Algebra 93 Next the proof of the side of the nonagon is shown.

1850 Southern Literary Messenger 16 94/2 These pillars are of every size, from the triangle to the nonagon.

1976 Sci. Amer. Apr. 128/3 Descartes's graph is a combination of Petersen graphs with inserted nonagons.

1989 K. Barratt Logic & Design (BNC) The nonagon is easier to comprehend if its three fold symmetry is revealed.

†B. adj.

Having nine sides. Obsolete.

ΘΚΠ

the world > space > shape > angularity > specific angular shape > [adjective] > polygonal > nine-sided

nonagon1754

the world > relative properties > number > geometry > shape or figure > [adjective] > two-dimensional > with nine or more sides or angles

decagonal1571

thousand-sided1704

nonagon1754

dodecagonal1854

tridecilateral1882

1754 R. Pococke Trav. through Eng. (1888) I. 72 They are making a nonagon building..where poultry..are to be kept.

This entry has been updated (OED Third Edition, December 2003; most recently modified version published online March 2022).

单词	nonagon
释义	nonagonn.adj. Brit. /ˈnɒnəɡɒn/, /ˈnɒnəɡ(ə)n/, U.S. /ˈnɑnəˌɡɑn/, /ˈnoʊnəˌɡɑn/ Origin: Formed within English, by compounding. Etymons: nona- comb. form, -gon comb. form. Etymology: < nona- comb. form + -gon comb. form. Compare Middle French nonogone (16th cent.).This is a hybrid formation, with a first element of Latin origin and a second element of Greek origin; compare enneagon n. Geometry. A. n. A plane figure with nine straight sides and nine angles. ΘΚΠ the world > space > shape > angularity > specific angular shape > [noun] > polygon > nonagon nonagon1639 enneagon1660 the world > relative properties > number > geometry > shape or figure > [noun] > two-dimensional > nonagon nonagon1639 enneagon1660 1639 R. Ward Animadversions of Warre i. iii. xii. 39 Nonagon, is a Figure of nine sides. 1688 R. Holme Acad. Armory (1905) iii. xvi. 98/1 An Henneagon, or Enneagon or Nonagon, a fort of nyne corners. 1705 E. Scarburgh Eng. Euclide 174 Of the..Nonagon, Euclide makes no mention. 1817 H. T. Colebrooke tr. Bhāskara Āchārya in Algebra 93 Next the proof of the side of the nonagon is shown. 1850 Southern Literary Messenger 16 94/2 These pillars are of every size, from the triangle to the nonagon. 1976 Sci. Amer. Apr. 128/3 Descartes's graph is a combination of Petersen graphs with inserted nonagons. 1989 K. Barratt Logic & Design (BNC) The nonagon is easier to comprehend if its three fold symmetry is revealed. †B. adj. Having nine sides. Obsolete. ΘΚΠ the world > space > shape > angularity > specific angular shape > [adjective] > polygonal > nine-sided nonagon1754 the world > relative properties > number > geometry > shape or figure > [adjective] > two-dimensional > with nine or more sides or angles decagonal1571 thousand-sided1704 nonagon1754 dodecagonal1854 tridecilateral1882 1754 R. Pococke Trav. through Eng. (1888) I. 72 They are making a nonagon building..where poultry..are to be kept. This entry has been updated (OED Third Edition, December 2003; most recently modified version published online March 2022). < n.adj.1639
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