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dimetrodon

/daɪˈmɛtrəˌdɑn/
IPA guide

Definitions of dimetrodon
  1. noun
    an extinct, carnivorous, mammal-like reptile of the Permian period, characterized by its tall spinal sail
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    type of:
    synapsid, synapsid reptile
    extinct reptile having a single pair of lateral temporal openings in the skull
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