Meaning of heterodactylous

het•er•o•dac•ty•lous

Pronunciation: (het"u-rō-dak'tu-lus), [key]
— adj. Ornith.
  1. having the first and fourth toes directed backward, and the second and third forward, as in trogons.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.