(ˈ)trī+ adjective
or tri·dactylous “+ ; also tri·dac·tyle -|dakt ə l
Etymology: tridactyl, tridactylous from Greek tridaktylos, from tri- three + daktylos finger; tridactyle from French, from Greek tridaktylos — more at tri-
: having three fingers or toes
the tridactyl foot of some reptiles