Dimetrodon Definition

Any of various carnivorous pelycosaurs of the genus Dimetrodon of the Permian Period, having long spines on the back that supported a sail-like structure, and powerful jaws with sharp teeth.
American Heritage

Origin of Dimetrodon

  • New Latin Dimetrodōn genus name Greek di- two di–1 Greek metron measure mē-2 in Indo-European roots Greek odōn tooth (from its having two different kinds of teeth) dent- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

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