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{%type%} Definitions

WordNet 3.0Copyright Princeton University
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n. - Carnivorous dinosaur of the Permian in North America having a crest or dorsal sail.

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Usage examples (7)
  • You haven't lived, 'til you've heard a dimetrodon scream.
  • Still trying to figure out when I can sneak a dimetrodon into STRANGEWAYS, actually ...
  • I was under the impression that “therapsid” always referred to a kind of synapsid reptile and was distinct from “pelycosaur” another kind of synapsid think dimetrodon.
  • Synapsids were pelycosaurs (i.e. dimetrodon) cynodonts, dicynodonts and all living and extinct mammals (a true clade), euryapsids were plesiosaurs and icthyosaurs (now...
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The Open Dictionary of English is a collaborative project, based on Open Source materials, LearnThat resources, and partner APIs.
We give special thanks to our LearnThat volunteers, as well as Princeton University and Wiktionary for their Open Source word data. We're also grateful for the support given by Google, Wordnik.com, Dictionary.com, Stands4.com and YouTube, OEDILF.com, Kylescholz.com, Best-Practice.com, Forvo.com, as well as the generous Creative Commons community.