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 (tĕt′rə-dăk′təl) also tet·ra·dac·ty·lous (-tə-ləs)
adj. Zoology
Having four digits on each extremity.

tet′ra·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.


(Animals) a four-toed animal
(Zoology) having four toes or fingers
[C19: from Greek tetradaktulos, from tetra- + daktulos finger]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
The manus is tetradactyl, and the pes is pentadactyl (Fig.
Although even the best manus (LM2) is too poorly preserved to be interpreted with confidence, it appears to show at least a tetradactyl arrangement with extensive extramorphology.
In ankylosaurian ichnotaxa, as Metatetrapous Nopcsa, 1923 and Tetrapodosaurus Sternberg, 1932, pes prints are tetradactyl with forward-oriented digit impressions and a subtriangular contour shape (e.g., McCrea et al., 2001; Hornung and Reich, 2014).
Savage and Lips (1993) also continued to recognize the Hispaniolan diploglossine tetradactyl genera, Sauresia and Wetmorea, both with claw sheaths, as distinct from Diploglossus.
Footprints of a quadrupedal tetrapod in which the manus is tetradactyl and the pes is pentadactyl.
DIAGNOSIS: Quadrupedal, plantigrade tetrapod trackway with tetradactyl manus and pentadactyl pes imprints.
Atreipus acadianus was produced by a habitually quadrupedal tetrapod with a tridactyl pes and a functionally tetradactyl manus.
This material includes well preserved pentadactyl and tetradactyl trackways of at least six different forms of both small and rather large tetrapods that were capable of locomotion on land (Smithson et al.