dodecahedron

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do·dec·a·he·dron / dōˌdekəˈhēdrən/ • n. (pl. -drons or -dra / -drə/ ) a three-dimensional shape having twelve plane faces, in particular a regular solid figure with twelve equal pentagonal faces. DERIVATIVES: do·dec·a·he·dral / -drəl/ adj.

dodecahedron

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dodecahedron A crystal form composed of 12 rhomb-shaped faces, each face intersecting two of the crystallographic axes and being parallel to the third. It belongs to the cubic (isometric) system.