(ˌ)dōˌdekəˈhēdrən noun
( plural dodecahedrons -nz ; or dodecahe·dra -rə)
Etymology: Greek dōdekaedron, from dōdeka- dodeca- + -edron -hedron
: a solid having 12 plane faces and commonly in either of two forms: (1) with 12 equal regular pentagonal faces or (2) with 12 equal rhombic faces — called also respectively (1) regular dodecahedron, (2) rhombic dodecahedron