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Webster 1913 Edition

Adj.

[L.

impar

unequal +

digitus

finger.]

(Anat.)

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

imparidigitate ‎(not comparable)

(anatomy) Having an odd number of fingers or toes.
The horse, tapir, and rhinoceros are imparidigitate.

imparidigitate