a. and sb. Zool. [f. Gr. ἄρτιο-ς even in number + δάκτυλος finger, toe.] A. adj. Having an even number of toes. B. sb. An ungulate animal of this kind.
1849–52. Todd, Cycl. Anat. & Phys., IV. 932/1. Artiodactyle ungulata.
1879. Le Conte, Elem. Geol., 508. The Artiodactyls always have their toes in pairs; there may be only two toes, as in Anoplothere and in Ruminants; or four as in the Hog and the Hippopotamus.
