[ ˌdəʊdɛkə'hi:dr(ə)n , -'hɛd- ]
■ noun ( plural dodecahedra -drə or ~s ) a three-dimensional shape having twelve plane faces, in particular a regular solid figure with twelve equal pentagonal faces.
Derivatives
dodecahedral adjective
Origin
C16: from Gk dōdekaedron , neut. (used as a noun) of dōdekaedros 'twelve-faced'.