artiodactyl Syllabification: (ar·ti·o·dac·tyl)Pronunciation: /ˌärtē-ōˈdaktl/ ZoologyDefinition of artiodactyl noun a mammal of the order Artiodactyla, such as a cow, sheep, camel, or pig. adjective relating to or denoting artiodactyls. artiodactyl in other Oxford dictionaries Definition of artiodactyl in the British & World English dictionary