ArtiodactylaPronunciation: /ˌɑːtɪə(ʊ)ˈdaktɪlə/Definition of Artiodactyla noun Zoology an order of mammals that comprises the even-toed ungulates. Compare with Perissodactyla.Origin:modern Latin (plural), from Greek artios 'even' + daktulos 'finger, toe'Artiodactyla in other Oxford dictionaries Definition of Artiodactyla in the US English dictionary