(of the limbs of amphibians, reptiles, birds, and mammals) consisting of an upper arm or thigh, a forearm or shank, and a hand or foot bearing five digits
pentadactyl in American English
(ˌpɛntəˈdæktəl)
adjective
having five fingers or toes on each hand or foot
Word origin
L pentadactylus < Gr pentadaktylos: see penta- & dactyl