Reptile vs. Saurian — What's the Difference?

Reptiles, as most commonly defined, are the animals in the class Reptilia , a paraphyletic grouping comprising all amniotes except synapsids (mammals and their extinct relatives) and Aves (birds). The class comprises turtles, crocodilians, snakes, amphisbaenians, lizards, tuatara, and their extinct relatives.

Any of various vertebrates of the group Sauria, which includes most of the diapsids, such as the dinosaurs, lizards, snakes, crocodilians, and birds. Sauria was formerly a suborder consisting of the lizards.

Any of various usually cold-blooded egg-laying vertebrates often grouped in the class Reptilia, having dry skin covered with scales or horny plates and breathing by means of lungs, and including the snakes, lizards, crocodilians, and turtles. In some classification systems, birds are considered to be reptiles because they are descended from reptilian dinosaurs.

(properly) A reptile of the suborder Sauria.

A person regarded as contemptible or obsequious.

Any large reptilian animal, including crocodiles and reptilian aliens.

(strictly) A cold-blooded vertebrate of the class Reptilia; an amniote that is neither a synapsid nor a bird; excludes amphibians.

(figuratively) A lizardlike person.

A reptile or amphibian.

(zoology) Of or related to the members of the suborder Sauria.

(figuratively) A mean or grovelling person.

(figuratively) lizardlike.

Creeping; moving on the belly, or by means of small and short legs.

Of or pertaining to, or of the nature of, the Sauria.

Grovelling; low; vulgar.

Any of various reptiles of the suborder Sauria which includes lizards; in former classifications included also the crocodiles and dinosaurs

Creeping; moving on the belly, or by means of small and short legs.

Of or relating to lizards

Hence: Groveling; low; vulgar; as, a reptile race or crew; reptile vices.

An animal that crawls, or moves on its belly, as snakes,, or by means of small, short legs, as lizards, and the like.

One of the Reptilia, or one of the Amphibia.

A groveling or very mean person.

Any cold-blooded vertebrate of the class Reptilia including tortoises turtles snakes lizards alligators crocodiles and extinct forms