Noun plethodon has 1 sense
  1. Plethodon, genus Plethodon - type genus of the Plethodontidae
    --1 is a kind of amphibian genus
    --1 is a member of Plethodontidae, family Plethodontidae
    --1 has members:
     eastern red-backed salamander, Plethodon cinereus; western red-backed salamander, Plethodon vehiculum
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