I. adjective
also poly·dac·tyle | ̷ ̷ ̷ ̷|dakt ə l
Etymology: Greek polydaktylos many-toed, from poly- + daktylos finger, toe
: having several or many digits ; especially : having more than the normal number of toes or fingers
polydactyl strains of guinea pigs — Genetics
II. noun
: one having more than the normal number of toes or fingers