Noun order monotremata has 1 sense
  1. Monotremata, order Monotremata - coextensive with the subclass Prototheria
    --1 is a kind of animal order
    --1 is a member of Prototheria, subclass Prototheria
    --1 has members:
     Tachyglossidae, family Tachyglossidae; Ornithorhynchidae, family Ornithorhynchidae
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