anisodactylous: Meaning and Definition of

an•i•so•dac•ty•lous

Pronunciation: (an-ī"su-dak'tl-us, an"ī-), [key]
— adj.
  1. having the toes unlike, or unequal in number.
  2. having three toes directed forward and one backward.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.