Definition of dimetrodon in English:
A large fossil carnivorous mammal-like reptile of the Permian period, with long spines on its back supporting a sail-like crest.
- Genus Dimetrodon, order Pelycosauria, subclass Synapsida
- What about the 30-inch dragonflies, six inch cockroaches, and the dimetrodons of the Permian period?
- I was inhaling ancient molecular effluvia of dimetrodons and plesiosaurs, pterodactyls and tyrannosauruses.
- But the iguanas in dinosaur costumes, super-sized dimetrodons, superimposed supposed menaces, don't cut it.
Definition of dimetrodon in:
- US English dictionary
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