• synonyms


or het·er·o·dac·tyl

[het-uh-roh-dak-tuh-luh s or het-uh-roh-dak-til]
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adjective Ornithology.
  1. having the first and fourth toes directed backward, and the second and third forward, as in trogons.
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Origin of heterodactylous

First recorded in 1850–55; hetero- + -dactylous
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for heterodactyl


  1. (of the feet of certain birds) having the first and second toes directed backwards and the third and fourth forwards
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  1. a bird with heterodactyl feet
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Compare zygodactyl
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