a. | 1. | Producing or containing carbon or coal.
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Noun | 1. | Carboniferous - from 345 million to 280 million years ago Synonyms: Carboniferous period |
Adj. | 1. | carboniferous - of or relating to the Carboniferous geologic era; "carboniferous rock system" |
2. | carboniferous - relating to or consisting of or yielding carbon |