TETRAHEDRON Meaning of TETRAHEDRON in English tetrahedr|on BrE AmE ˌtetr ə ˈhiːdr | ə n -ˈhedr- ▷ tetrahedr|a ə▷ tetrahedr|al ə l▷ tetrahedr|ons ə nz Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012