dodecahedron
noun/ˌdəʊdekəˈhiːdrən/
/ˌdəʊdekəˈhiːdrən/
(geometry)- a solid shape with twelve flat sides compare dodecagonWord Originlate 16th cent.: from Greek dōdekaedron, neuter (used as a noun) of dōdekaedros ‘twelve-faced’.
Check pronunciation:
dodecahedron