poly·dac·tyl I. adjective alsopoly·dac·tyle\| ̷ ̷ ̷ ̷|daktəl\ 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