Table of Contents -- octagon
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HYPHEN
WORDNET DICTIONARY
CIDE DICTIONARY
OXFORD DICTIONARY
ROGET THESAURUS
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# octagon

:
Noun
:
oc=ta=gon

## CIDE DICTIONARY

octagonn. [Gr. eight-cornered; 'okta- (for 'oktw` eight) + an angle: cf. F. cctogone.].
•  A plane figure of eight sides and eight angles.  [1913 Webster]
•  Any structure (as a fortification) or place with eight sides or angles.  [1913 Webster]
Regular octagon, one in which the sides are all equal, and the angles also are all equal.

## OXFORD DICTIONARY

octagon, n.
1 a plane figure with eight sides and angles.
2 an object or building with this cross-section.

Derivative
octagonal adj. octagonally adv.
Etymology
L octagonos f. Gk octagonos (as OCTA-, -GON)

## ROGET THESAURUS

### Angularity

N angularity, angularness, aduncity, angle, cusp, bend, fold, notch, fork, bifurcation, elbow, knee, knuckle, ankle, groin, crotch, crutch, crane, fluke, scythe, sickle, zigzag, kimbo, akimbo, corner, nook, recess, niche, oriel, coign, right angle, obliquity, angle of 45 degrees, miter, acute angle, obtuse angle, salient angle, reentering angle, spherical angle, angular measurement, angular elevation, angular distance, angular velocity, trigonometry, goniometry, altimetry, clinometer, graphometer, goniometer, theodolite, sextant, quadrant, dichotomy, triangle, trigon, wedge, rectangle, square, lozenge, diamond, rhomb, rhombus, quadrangle, quadrilateral, parallelogram, quadrature, polygon, pentagon, hexagon, heptagon, octagon, oxygon, decagon, pyramid, cone, Platonic bodies, cube, rhomboid, tetrahedron, pentahedron, hexahedron, octahedron, dodecahedron, icosahedron, eicosahedron, prism, pyramid, parallelopiped, curb roof, gambrel roof, mansard roof, angular, bent, crooked, aduncous, uncinated, aquiline, jagged, serrated, falciform, falcated, furcated, forked, bifurcate, zigzag, furcular, hooked, dovetailed, knock kneed, crinkled, akimbo, kimbo, geniculated, oblique, fusiform, wedge-shaped, cuneiform, cuneate, multangular, oxygonal, triangular, trigonal, trilateral, quadrangular, quadrilateral, foursquare, rectangular, square, multilateral, polygonal, cubical, rhomboid, rhomboidal, pyramidal.

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