anisodactylous

[ an-ahy-suh-dak-tl-uh s, an-ahy- ]
/ ænˌaɪ səˈdæk tl əs, ˌæn aɪ- /

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

British Dictionary definitions for anisodactyl

anisodactyl
/ (ænˌaɪsəʊˈdæktɪl, ˌænaɪ-) /

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