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adj. also an·i·so·dac·ty·lous (-tə-ləs)
Having three toes projecting forward and one projecting backward, as in the passerine birds.
An anisodactyl bird, such as a warbler.
an·i′so·dac′ty·ly (-tə-lē) n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.