imparidigitate

from The Century Dictionary.

• In zoology, having an odd or uneven number of digits, whether fingers or toes, as one, three, or five; anisodactyl; perissodactyl. The human hand or foot, the hoofs of a horse, etc., are imparidigitate.

from the GNU version of the Collaborative International Dictionary of English.

• adjective (Anat.) Having an odd number of fingers or toes, either one, three, or five, as in the horse, tapir, rhinoceros, etc.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• adjective anatomy Having an odd number of fingers or toes.