octagon en · NOUN
Pronunciation
- (General-American) audio
- /ˈɒktəɡ(ə)n/ (Received-Pronunciation)
- ŏk'təgŏn (General-American)
- ŏk'təgən (Received-Pronunciation)
- /ˈɑktəˌɡɑn/ (General-American)
- (Canada) audio
Etymology
From Latin octagōnon, octōgōnon (“octagon”), and from its etymon Ancient Greek ὀκτάγωνον (oktágōnon, “octagon”), probably from Koine Greek ὀκτάγωνος (oktágōnos, “having eight corners”) + -ον (-on, suffix forming nouns). ὀκτάγωνος is derived from ὀκτᾰ- (oktă-, prefix meaning ‘eight’) (from ὀκτώ (oktṓ, “eight”), ultimately from Proto-Indo-European *oḱtṓw (“eight”)) + γωνία (gōnía, “angle; corner”) (probably ultimately from Proto-Indo-European *ǵónu (“knee”)); analysable as octa- + -gon. The English word is cognate with Middle French octogone (modern French octogone), Italian octagono (obsolete), ottagono, Spanish octágono, octógono. Sense 2 (“arena for mixed martial arts”) refers to its shape.
Meanings
-
(also, attributive) A polygon with eight sides and eight angles.
In like manner it is demonſtrated that one angle of a regular hexagon will be equal to one right angle, and one third part of one right angle; one angle of a regular octagon equal to one right angle and half a right angle; [...]
1752, Euclid, “[Additions to the Fourth Book.] Prop[osition] VII. Probl[em]. To Describe any Regular Polygon upon a Given Right Line, Admitting the Division of a Given Arch of a Circle into any Number of Equal Parts.”, in E[dmund] Stone, transl., Euclid’s Elements of Geometry, the First Six, the Eleventh and Twelfth Books; […], London: […] Tho[mas] Payne, […], →OCLC, book IV, pages 199–200:Meronyms: angle, side; see also Thesaurus:polygon
The font is an octagon, having at each angle a slender pillar with crockets and finials, and the sides are richly sculptured with angels and animals, the figures holding shields, with various devices; at each corner of the contracting part towards the pedestal, are cherubs heads with expanded wings; and the pedestal, which is an irregular octagon, is ornamented with four non-descript animals, scaled over their breasts; on a moulding round the bottom are several old characters, now illegible.
1810, [James Sargant Storer; John Grieg], “Worlingworth Church, Suffolk”, in Antiquarian and Topographical Cabinet, Containing a Series of Elegant Views of the Most Interesting Objects of Curiosity in Great Britain. […], volume VII, London: […] W. Clarke, […], →OCLC:Bismuth is the most common of all native metallic substances. It is generally found either in cubes or octagons, or of a dendritical form, or else in thin laminæ investing the ores of other metals, particularly those of cobalt.
1808, William Nicholson, “Ores of Bismuth”, in A Dictionary of Practical and Theoretical Chemistry, […], London: […] Richard Phillips, […], →OCLC, column 2:The building [the Winter Garden conservatory, Kew Gardens] was to be of five parts—a centre, two small octagons, and two wings connected by the octagons with the centre. The centre and the two octagons were finished, and some expenditure must have been laid out on the wings, as the ground was dug out and foundations in concrete laid for the pillars.
1863 June 1, [Charles William] Selwyn, “Supply—Civil Service Estimates. Supply Considered in Committee.”, in Hansard’s Parliamentary Debates, […] (House of Commons), volume CLXXI, London: Published by Cornelius Buck, at the office for “Hansard’s Parliamentary Debates,” […], →OCLC, columns 214–215:From the Circle deſcribe the Octagon, by taking half the Quadrant of the former for each Side of the latter. [...] [B]y conjoining theſe Points with ſtrait Lines agreeable to the Shape of the Octagon, the whole Work is completed.
1707, Andrea Pozzo, “The Ninety-second Fig. An Octangular Cupola.”, in John James, transl., Rules and Examples of Perspective Proper for Painters and Architects, etc. in English and Latin: […], London: […] Benj[amin] Motte [Sr.], […]; [s]old by John Sturt […], →OCLC:China converted the hard octagons of the Turkoman rugs into circular scrolls or medallions, beautifying them meanwhile with floral character manifestly borrowed from the Persians and yet by no means Persian.
1922 October 28, Roy C. Bennett, “Rug Gift to National Press Club Typifies New China Industry”, in J[ohn] B[enjamin] Powell, editor, The Weekly Review, volume XXII, number 9, Shanghai: Millard Publishing Company, →OCLC, page 299, column 2:
- An arena for mixed martial arts.
Forms
| Spelling | Features | Labels | Source |
|---|---|---|---|
| octogon | alternative, obsolete | lexicographic | |
| octagons | Number=Plur | lexicographic |
Coordinates
decagon · polygon · quadrilateral · heptagon · nonagon · triangle · hexagon · pentagon
Deriveds
Hypernyms
Synonyms
Translations (109)
my အဋ္ဌဂံ (polygon with eight sides and eight angles) · af oktogoon (polygon with eight sides and eight angles) · de Achteck (polygon with eight sides and eight angles) · bn অষ্টভুজ (polygon with eight sides and eight angles) · nb oktogon (polygon with eight sides and eight angles) · kk сегізбұрыш (polygon with eight sides and eight angles) · sv oktagon (polygon with eight sides and eight angles) · fy achthoek (polygon with eight sides and eight angles) · af aghoek (polygon with eight sides and eight angles) · de Oktogon (polygon with eight sides and eight angles) · gd ochd-shliosach (polygon with eight sides and eight angles) · bg октагон (polygon with eight sides and eight angles) · da ottekant (polygon with eight sides and eight angles) · tl oktagon (polygon with eight sides and eight angles) · ar مثمن (polygon with eight sides and eight angles) · pl ośmiokąt (polygon with eight sides and eight angles) · ro octogon (polygon with eight sides and eight angles) · sd اٺاس (polygon with eight sides and eight angles) · eo okangulo (polygon with eight sides and eight angles) · fr octogone (polygon with eight sides and eight angles) · pl oktagon (arena for mixed martial arts) · zu unxasishiyagalombili class 1a/2a (polygon with eight sides and eight angles) · sv åttahörning (polygon with eight sides and eight angles) · eo oklatero (polygon with eight sides and eight angles) · ms oktagon (polygon with eight sides and eight angles) · es octágono (polygon with eight sides and eight angles) · de Oktagon (polygon with eight sides and eight angles) · la octagonum (polygon with eight sides and eight angles) · lmo otàgon (polygon with eight sides and eight angles) · mi tapawaru (polygon with eight sides and eight angles) · hy ութանկյուն (polygon with eight sides and eight angles) · ba һигеҙмөйөш (polygon with eight sides and eight angles) · ckb ھەشتلا (polygon with eight sides and eight angles) · mk осума́голник (polygon with eight sides and eight angles) · nn oktogon (polygon with eight sides and eight angles) · he מְתֻמָּן (polygon with eight sides and eight angles) · ms astakona (polygon with eight sides and eight angles) · eu octogono (polygon with eight sides and eight angles) · vi bát giác (polygon with eight sides and eight angles) · is átthyrningur (polygon with eight sides and eight angles) · ms segi lapan (polygon with eight sides and eight angles) · ko 팔각형 (polygon with eight sides and eight angles) · ta எண்கோணம் (polygon with eight sides and eight angles) · sk osemuholník (polygon with eight sides and eight angles) · nn åttekant (polygon with eight sides and eight angles) · nv tseebíígóó adeezʼá (polygon with eight sides and eight angles) · ht oktagòn (polygon with eight sides and eight angles) · sh осмоугао (polygon with eight sides and eight angles) · ca octàgon (polygon with eight sides and eight angles) · uk восьмику́тник (polygon with eight sides and eight angles) · it ottagono (polygon with eight sides and eight angles) · ru восьмиуго́льник (polygon with eight sides and eight angles) · tl walsiha (polygon with eight sides and eight angles) · nb åttekant (polygon with eight sides and eight angles) · ja 八角形 (polygon with eight sides and eight angles) · kum сегиз мююшлюк (polygon with eight sides and eight angles) · la octagonon (polygon with eight sides and eight angles) · hsb wosmiróžk (polygon with eight sides and eight angles) · dsb wósymrožk (polygon with eight sides and eight angles) · gl octógono (polygon with eight sides and eight angles) · fa هشتضلعی (polygon with eight sides and eight angles) · ne अष्टकोण (polygon with eight sides and eight angles) · id oktagon (polygon with eight sides and eight angles) · te అష్టభుజి (polygon with eight sides and eight angles) · nv tseebíigo bízniikʼą́ (polygon with eight sides and eight angles) · hu nyolcszög (polygon with eight sides and eight angles) · pl ośmiobok (polygon with eight sides and eight angles) · sh osmougao (polygon with eight sides and eight angles) · or ଅଷ୍ଟଭୁଜ (polygon with eight sides and eight angles) · ps اتڅنډی (polygon with eight sides and eight angles) · stq Oachtkaant (polygon with eight sides and eight angles) · fo átthyrningur (polygon with eight sides and eight angles) · fo áttakantur (polygon with eight sides and eight angles) · wuu 八边形 (polygon with eight sides and eight angles) · id segi delapan (polygon with eight sides and eight angles) · el οκτάγωνο (polygon with eight sides and eight angles) · fi kahdeksankulmio (polygon with eight sides and eight angles) · mn наймалжин (polygon with eight sides and eight angles) · ga ochtagán (polygon with eight sides and eight angles) · bg осмоъгълник (polygon with eight sides and eight angles) · pt octógono (polygon with eight sides and eight angles) · alt сегистолык (polygon with eight sides and eight angles) · cmn 八角籠 /八角笼 (arena for mixed martial arts) · io oktogono (polygon with eight sides and eight angles) · th แปดเหลี่ยม (polygon with eight sides and eight angles) · pl oktagon (polygon with eight sides and eight angles) · cs osmiúhelník (polygon with eight sides and eight angles) · cy wythongl (polygon with eight sides and eight angles) · la octogonum (polygon with eight sides and eight angles) · pt octágono (polygon with eight sides and eight angles) · cmn 八邊形 /八边形 (polygon with eight sides and eight angles) · hi अष्टकोण (polygon with eight sides and eight angles) · bo ཟུར་བརྒྱད་མ (polygon with eight sides and eight angles) · nl achthoek (polygon with eight sides and eight angles) · hsb oktogon (polygon with eight sides and eight angles) · el οχτάγωνο (polygon with eight sides and eight angles) · sl osmerokotnik (polygon with eight sides and eight angles) · tr sekizgen (polygon with eight sides and eight angles) · hak 八邊形 /八边形 (polygon with eight sides and eight angles) · ast octógonu (polygon with eight sides and eight angles) · frr Aachthuk (polygon with eight sides and eight angles) · ka რვაკუთხედი (polygon with eight sides and eight angles) · lt astoņstūris (polygon with eight sides and eight angles) · hsb wósomróžk (polygon with eight sides and eight angles) · cmn 八角形 (polygon with eight sides and eight angles) · grc ὀκτάγωνον (polygon with eight sides and eight angles) · km អដ្ឋកោន (polygon with eight sides and eight angles) · mn найман өнцөгт (polygon with eight sides and eight angles) · yue 八邊形 /八边形 (polygon with eight sides and eight angles)