Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Of, belonging to, or denoting a geologic division of the Paleozoic Era following the Devonian and preceding the Permian, including the Mississippian Period and the Pennsylvanian Period and characterized, especially in the Pennsylvanian, by swamp formation and deposition of plant remains later hardened into coal.
  • adj. Producing or containing carbon or coal.
  • n. The Carboniferous Period. See Table at geologic time.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. of a geologic period within the Paleozoic era; comprises the lower, middle and upper Mississippian and lower, middle and upper Pennsylvanian epochs from about 345 to 280 million years ago, when coal was laid down
  • proper n. the Carboniferous period

from the GNU version of the Collaborative International Dictionary of English

  • adj. Producing or containing carbon or coal.

from The Century Dictionary and Cyclopedia

  • Containing or yielding carbon or coal.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. of or relating to the Carboniferous geologic era
  • adj. relating to or consisting of or yielding carbon
  • n. from 345 million to 280 million years ago

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