symmetrical Syllabification: (sym·met·ri·cal)Pronunciation: /səˈmetrikəl/Translate symmetrical | into German | into Italian | into Spanish Definition of symmetrical adjective made up of exactly similar parts facing each other or around an axis; showing symmetry. Derivatives symmetric adjective symmetricallyPronunciation: /-ik(ə)lē/ adverb symmetrical in other Oxford dictionaries Definition of symmetrical in the British & World English dictionary