Dodecahedron

(do-dek-a-hedron) [From Gr. dōdeka, twelve, and hed ra, base.) (Geom.) One of the 5 bodies of regular solids of the Platonic method, consisting superficially of 12 equal and regular pentagons, found by multiplying the square of the side of one of its pentagons by 20-64578, and its solid contents by multiplication of the cube of one of the same sides by 7-66312. [s. 295]