anisodactylous

[an-ahy-suh-dak-tl-uh s, an-ahy-]

adjective

Zoology. having the toes unlike, or unequal in number.
Ornithology. having three toes directed forward and one backward.

Also an·i·so·dac·tyl.

Origin of anisodactylous

aniso- + -dactylous

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

British Dictionary definitions for anisodactyl

anisodactyl

adjective Also: anisodactylous

(of the feet of passerine birds) having the first toe directed backwards and the other three toes directed forwards

noun

a bird having this type of feet

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012