Webster's Writer's Dictionary

DODECAHEDRON

Do*dec`a*he"dron [Gr. dodécaèdre.] (Geom. & Crystallog.)

A solid having twelve faces.

Note: The regular dodecahedron is bounded by twelve equal and regular pentagons; the pyritohedron (see Pyritohedron) is related to it; the rhombic dodecahedron is bounded by twelve equal rhombic faces.