| Noun | 1. | Cynodontia - a division of the order Therapsida from the Triassic period comprising small carnivorous tetrapod reptiles often with mammal-like teeth order Therapsida, Therapsida - extinct mammal-like reptiles found inhabiting all continents from the mid Permian to late Triassic cynodont - small carnivorous reptiles Exaeretodon, genus Exaeretodon - a genus of reptiles of the division Cynodontia division - (biology) a group of organisms forming a subdivision of a larger category |