- (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
WordReference Random House Unabridged Dictionary of American English © 2026
pen•ta•dac•tyl
(pen′tə dak′tl, -til),USA pronunciation adj.
pen′ta•dac′tyl•ism, n.
- Anatomyhaving five digits on each hand or foot.
- Anatomyhaving five fingerlike projections or parts.
- Greek pentadáktylos. See penta-, -dactyl
- Latin pentadactylus
- 1655–65
Collins Concise English Dictionary © HarperCollins Publishers::
pentadactyl, pentadactyle /ˌpɛntəˈdæktɪl/ adj