Noun hystricomorpha has 1 sense
  1. Hystricomorpha, suborder Hystricomorpha - an order of rodents including: porcupines; guinea pigs; chinchillas; etc.
    --1 is a kind of animal order
    --1 is a member of Rodentia, order Rodentia
    --1 has members:
     Hystricidae, family Hystricidae; Erethizontidae, family Erethizontidae; Caviidae, family Caviidae; Dasyproctidae, family Dasyproctidae; Capromyidae, family Capromyidae; Chinchillidae, family Chinchillidae; Bathyergidae, family Bathyergidae
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