reptilian

Meanings

1. 1
   adj

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

   The Mesozoic represents that time on Earth when life flourished, but when such life was primarily reptilian, before the Age of Mammals.

2. 2
   adj

   Reptilelike.

   It is filled with blazing fires and half-human, half-animal beasts, with spiked reptilian tails.

3. 3
   noun

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

   More evolved than the Grays or Reptilians, the Humanoids seem to feel some sort of kinship with humans and are likely to be kind.[…] Some researchers believe the Grays are merely preparing the way for a full-scale invasion of Reptilian aliens.

4. 4
   adj

   of or relating to the class Reptilia

5. 5
   noun

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

6. 6
   adj

   Unthinking, low, base, contemptible.

7. 7
   adj

   Cold-blooded, treacherous, unavoidably selfish and hostile.

8. 8
   noun

   A reptilian animal: a reptile.

Etymology

From reptile + -ian, replacing earlier reptilious and adjectival reptile.