Definition of "reptilian" in English

adjective

1. (zoology) Of or relating to the members of the class Reptilia (reptiles).

2. Reptilelike.

3. (figuratively) Unthinking, low, base, contemptible.

4. (figuratively) Cold-blooded, treacherous, unavoidably selfish and hostile.

noun

1. A reptilian animal: a reptile.

2. (figuratively) A reptilian person, especially (ethnic slur) a Jew.

3. (science fiction) A reptilian alien, especially (ufology, often capitalized) of a shapeshifting race alleged to secretly control the world.