POLYHEDRON Meaning of POLYHEDRON in English n. (pl. polyhedra) a solid figure with many (usu. more than six) faces. polyhedral adj. polyhedric adj.[ Gk poluedron neut. of poluedros (as POLY-(1), hedra base) ] Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012