• Webster's Revised Unabridged Dictionary
    • a Anisodactylous (Zoöl) Characterized by unequal toes, three turned forward and one backward, as in most passerine birds.
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Century Dictionary and Cyclopedia
    • anisodactylous Unequal-toed; having the toes unlike In mammals, of or pertaining to the Anisodactyla; perissodactyl; pachydermatous. See cut under perissodactyl. In ornithology, of or pertaining to the anisodactyls, or Anisodactyli. Equivalent forms are anisodactyl, anisodactyle, and anisodactylic.
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