pentadactylWiktionary 原文英美构词拆解pentapenta-前缀dactyl-dactyl后缀penta-Five.-dactyl(chiefly zoology) digits词源说明From penta- + -dactyl.释义形容词adjective1(anatomy) Having five digits on a limb.同族词派生词 3pentadactylism·pentadactyloid·pentadactyly