heterodactylous

[ het-uh-roh-dak-tuh-luhs ]
/ ˌhɛt ə roʊˈdæk tə ləs /

adjective Ornithology.

having the first and fourth toes directed backward, and the second and third forward, as in trogons.

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Also het·er·o·dac·tyl [het-uh-roh-dak-til] /ˌhɛt ə roʊˈdæk tɪl/ .

Origin of heterodactylous

First recorded in 1850–55; hetero- + -dactylous
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020