octagonal C2 Topic:Mathematics & Measurement US /ɑkˈtæɡənəl/ UK /ɒkˈtæɡənəl/ See IPA manual Freq #76597 Meanings 1 adj having the shape of an octagon, with eight sides and eight angles The tower had an octagonal window. Thesaurus Synonyms 1 adj · having the shape of an... eight-sided Etymology From octagon + -al. Topics Mathematics & Measurement External links Cambridge Dictionary Wiktionary Google Images # octagonal **Type:** Word **Level:** C2 **Part of speech:** adj **IPA (US):** /ɑkˈtæɡənəl/ **IPA (UK):** /ɒkˈtæɡənəl/ **Frequency rank:** 76597 ## Meanings 1. having the shape of an octagon, with eight sides and eight angles ## Examples - The tower had an octagonal window. ## Synonyms - eight-sided ## Etymology From octagon + -al. ## Topics - Mathematics & Measurement markdown