dodecahedron dodecahedron /ˌdoʊdɛkəˈhiːdrən/

noun

1. Any polyhedron having twelve plane faces  ( dodecahedron )
   any polyhedron having twelve plane faces
    The 12-sided dice in many board games is shaped like a dodecahedron.
   The 12-sided dice in many board games is shaped like a dodecahedron.