pentadactylism

pentadactyl

[pen-tuh-dak-tl, -til]
adjective
1.
having five digits on each hand or foot.
2.
having five fingerlike projections or parts.

Origin:
1655–65; < Latin pentadactylus < Greek pentadáktylos. See penta-, -dactyl

pentadactylism, noun
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World English Dictionary
pentadactyl (ˌpɛntəˈdæktɪl)
 
adj
(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

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