DECAHEDRON Meaning of DECAHEDRON in English decahedr|on BrE AmE ˌdek ə ˈhiːdr | ə n -ˈhedr-; ˈ••ˌ•• ▷ decahedr|a ə▷ decahedr|ons ə nz Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012