• Webster's Revised Unabridged Dictionary
    • a Tetradactyl (Zoöl) Tetradactylous.
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Century Dictionary and Cyclopedia
    • tetradactyl Having four fingers or toes; quadridigitate: noting either the fore feet or the hind feet of a quadruped, or
    • tetradactyl a four-toed bird, or
    • tetradactyl a quadruped only (when four-toed before and behind).
    • n tetradactyl A four-toed animal.
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Chambers's Twentieth Century Dictionary
    • adj Tetradactyl tet-ra-dak′til. having four fingers or toes—also Tetradac′tylous
    • n Tetradactyl a four-toed animal
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Webster's Revised Unabridged Dictionary
Cf. F. tétradactyle,


In literature:

Tetradactyle: with four fingers or finger-like processes.
"Explanation of Terms Used in Entomology" by John. B. Smith
This and the succeeding group are tetradactylous; having one toe behind, three forwards.
"Remarks on some fossil impressions in the sandstone rocks of Connecticut River" by John Collins Warren
The fore-feet are pentadactyle, but functionally tetradactyle; the hind-feet tridactyle.
"The Cambridge Natural History, Vol X., Mammalia" by Frank Evers Beddard