• WordNet 3.6
    • n Perissodactyla nonruminant ungulates: horses; tapirs; rhinoceros; extinct forms
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Webster's Revised Unabridged Dictionary
    • n. pl Perissodactyla (Zoöl) A division of ungulate mammals, including those that have an odd number of toes, as the horse, tapir, and rhinoceros; -- opposed to Artiodactyla.
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Chambers's Twentieth Century Dictionary
    • n Perissodactyla pe-ris-ō-dak′ti-la one of the two divisions of the great mammalian order Ungulata, including the horse, tapir, and rhinoceros, distinguished by the third digit of each limb being symmetrical in itself, by the presence of an odd number of digits on the hind-foot, &c
    • Perissodactyla opp. to Artiodactyla
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Webster's Revised Unabridged Dictionary
NL., from Gr. odd (fr. over) + finger


In literature:

The distinctive characteristics of the family, and its position in the zoological system, are given in the articles EQUIDAE and PERISSODACTYLA.
"Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 6" by Various
As to the Perissodactyla and the Artiodactyla we cannot bring them together nearer than in quite early Tertiary times.
"The Cambridge Natural History, Vol X., Mammalia" by Frank Evers Beddard