a. Also -yle. [ad. Gr. τριδάκτυλ-ος, f. τρι-, TRI- + δάκτυλος finger, digit.] Having three fingers or toes.

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1812.  Shaw, Gen. Zool., VIII. 104. Tridactyle Kingfisher.

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1822.  J. Parkinson, Outl. Oryctol., 321. The feet of this animal were tridactyle.

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1877.  Le Conte, Elem. Geol., I. (1879), 431. Only three functional toes on the hind foot, which therefore formed a tridactyl track.

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1912.  Return Brit. Museum, 179. A tridactyl Reptilian foot-print.

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