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Adjective carboniferous has 2 senses
  1. carboniferous - of or relating to the Carboniferous geologic era; "carboniferous rock system"
  2. carbonaceous, carbonous, carbonic, carboniferous - relating to or consisting of or yielding carbon
,Noun carboniferous has 1 sense
  1. Carboniferous, Carboniferous period - from 345 million to 280 million years ago
    --1 is a kind of period, geological period
    --1 is a part of Paleozoic, Paleozoic era
    --1 has parts:
     Pennsylvanian, Pennsylvanian period, Upper Carboniferous, Upper Carboniferous period; Mississippian, Missippian period, Lower Carboniferous, Lower Carboniferous period
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