(geometry) A polyhedron with twelve faces; the regular dodecahedron has regular pentagons as faces and is one of the Platonic solids.

plural of dodecahedron

Relating to, or having the form of a dodecahedron

(mathematics) A Catalan solid equivalent to a dodecahedron with a pentagonal pyramid covering each face

plural of rhombic dodecahedron

(geometry) A convex polyhedron that has 12 congruent rhombic faces, 24 edges and 14 vertices of two types (eight 3-edge and six 4-edge) and is a Catalan solid.

(geometry) A polyhedron that has 12 pentagonal and 80 triangular faces and is an Archimedean solid.

plural of truncated dodecahedron

(geometry) An Archimedean solid with thirty-two regular faces (twelve decagons and twenty triangles) and ninety edges.

(archaeology) A small hollow dodecahedral object of bronze or stone, with holes in the faces, mostly found at Gallo-Roman sites. Their use and significance is uncertain.