What does artiodactylous mean?
Artiodactylous is a technical adjective from zoology describing mammals that have an even number of toes on each foot — most commonly two or four. It applies to the members of the order Artiodactyla, a large group of hoofed animals that includes cattle, sheep, goats, pigs, deer, antelopes, camels, giraffes, hippos, and whales. In many of these animals the weight is carried on the third and fourth digits, producing the familiar cloven hoof. The word appears mainly in scientific writing — anatomy, paleontology, and veterinary medicine — where precision matters more than readability, so ordinary readers are more likely to encounter its sibling noun 'artiodactyl'. Its counterpart term, perissodactylous, covers odd-toed mammals such as horses and rhinos. Though rarely heard outside specialist circles, artiodactylous neatly captures one of the deepest divisions in mammalian classification: whether a hoofed animal walks on an even or an odd number of toes.
adjectiveHaving an even number of toes on each foot, typically two or four; belonging or relating to the order Artiodactyla of hoofed mammals such as cattle, deer, pigs, sheep, and camels.
- Of a mammal: having an even number of toes on each foot; belonging to the order Artiodactyla.
- Of or relating to the order Artiodactyla.
"The fossil trackway revealed the artiodactylous footprint of an ancient deer-like mammal."
"Cattle are artiodactylous, bearing weight on two functional toes encased in a cloven hoof."
"The zookeeper noted that the hippopotamus, though semiaquatic, is unmistakably artiodactylous."
Every cow, pig, deer, camel, and hippo on Earth shares one trait: they are all artiodactylous — walking on an even number of toes.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of artiodactylous
The word derives from Greek roots: 'artios', meaning even, combined with 'daktylos', meaning finger or toe. These roots entered scientific Latin as Artiodactyla, the name coined for the even-toed ungulate order in the nineteenth century as modern mammalian classification took shape, with English forms such as artiodactylous following. The same Greek root 'daktylos' also underlies related terms like 'pterodactyl' and the adjective 'dactylic', all literally concerning fingers or toes.
How artiodactylous is actually used
Strictly scientific in register; used almost exclusively in zoology, paleontology, and veterinary contexts rather than everyday speech. The simpler noun form 'artiodactyl' is far more common.
Easily confused with artiodactylous
Perissodactylous describes odd-toed hoofed mammals like horses and rhinoceroses, whereas artiodactylous describes even-toed ones such as cattle and deer.