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octagon | octagonal | octagynous | octahedral | octahedrite | octahedron | octal | octal digit | octal notation | octal number system | octal numeration system





octahedronn. [Gr., fr. eight-side; 'okta- (for 'oktw` eight) + seat, base, from to sit.].
     A solid bounded by eight faces. The regular octahedron is contained by eight equal equilateral triangles.  [1913 Webster]


octahedron, n. (pl. octahedrons or octahedra)
1 a solid figure contained by eight (esp. triangular) plane faces.
2 a body, esp. a crystal, in the form of a regular octahedron.

regular octahedron an octahedron contained by equal and equilateral triangles.
octahedral adj.
Gk oktaedron (as OCTA-, -HEDRON)




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.

For further exploring for "octahedron" in Webster Dictionary Online

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