anisodactylous

[an-ahy-suh-dak-tl-uh s, an-ahy-]
adjective
  1. Zoology. having the toes unlike, or unequal in number.
  2. Ornithology. having three toes directed forward and one backward.
Also an·i·so·dac·tyl.

Origin of anisodactylous

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018