zy·go·dac·ty·lae \ˌ ̷ ̷ ̷ ̷ˈdaktəˌlē\noun plural orzy·go·dac·ty·li\-ˌlī\ Usage: capitalized Etymology: New Latin, from zyg- + -dactylae, -dactyli (from dactylus dactyl) in former classifications: a group of nonpasserine birds consisting of those having zygodactyl feet