polydactyl
adjective
poly·dac·tyl ˌpä-lē-ˈdak-tᵊl 
: having or causing polydactyly
Example Sentences
Recent Examples on the Web The polydactyl cat was born with feline dwarfism and other genetic mutations that kept her kitten-sized for her entire life, with huge eyes and a protruding tongue. 
NBC News, 2 Dec. 2019 The ad for Bruno, a polydactyl Russian blue mix, appeared on the Facebook page of Wright-Way Rescue Wednesday and has since gone viral. Fox News, 19 Aug. 2018 The anthropologists found three polydactyl individuals among the 96 skeletons, all with a sixth toe on the little toe-side of the right foot. Scott S. Warren, National Geographic, 25 July 2016
NBC News, 2 Dec. 2019 The ad for Bruno, a polydactyl Russian blue mix, appeared on the Facebook page of Wright-Way Rescue Wednesday and has since gone viral. Fox News, 19 Aug. 2018 The anthropologists found three polydactyl individuals among the 96 skeletons, all with a sixth toe on the little toe-side of the right foot. Scott S. Warren, National Geographic, 25 July 2016 Word History
Etymology
borrowed from French polydactyle, borrowed from Greek polydáktylos "having many toes," from poly- poly- + -daktylos "having digits (of the kind specified)," adjective derivative of dáktylos "finger, toe" — more at dactyl
First Known Use
1827, in the meaning defined above
Medical Definition
polydactyl 1 of 2
adjective
poly·dac·tyl ˌpäl-i-ˈdak-tᵊl
: characterized by polydactyly
polydactyl strains of guinea pigs Genetics
Genetics also : being a gene that determines polydactyly
polydactyl
2 of 2noun
: one having more than the normal number of toes or fingers