- reptile, reptilian - any cold-blooded vertebrate of the class Reptilia including tortoises turtles snakes lizards alligators crocodiles and extinct forms
--1 is a kind of vertebrate, craniate
--1 is a member of Reptilia, class Reptilia
--1 has particulars:anapsid, anapsid reptile; diapsid, diapsid reptile; Diapsida, subclass Diapsida; synapsid, synapsid reptile