The Collaborative International Dictionary
Tridactyl
Tridactyl \Tri*dac"tyl\ Tridactyle \Tri*dac"tyle\, a. [Gr. ?: ? (see Tri-) + ? digit: cf. F. tridactyle.] (Biol.) Having three fingers or toes, or composed of three movable parts attached to a common base.
Wiktionary
tridactyl
1 (context anatomy English) Having three digits on a lim
2 (context biology English) Composed of three movable parts attached to a common base.
Usage examples of "tridactyl".
It galloped on muscular hind legs, its tridactyl feet terminating in large hooked claws that dug up great plumes of snow.