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{%type%} Definitions

WordNet 3.0Copyright Princeton University
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n. - From 345 million to 280 million years ago.

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Usage examples (35)
  • carboniferous rock system
  • It is one great sheet of old coral-reef and coral-mud, which is now called the carboniferous limestone.
  • All that chemistry can tell us is the amount of "carboniferous" or "nitrogenous" elements discoverable in different dietetic articles.
  • -- Formation of carboniferous rocks and the coal in the same.
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The Open Dictionary of English is a collaborative project, based on Open Source materials, LearnThat resources, and partner APIs.
We give special thanks to our LearnThat volunteers, as well as Princeton University and Wiktionary for their Open Source word data. We're also grateful for the support given by Google, Wordnik.com, Dictionary.com, Stands4.com and YouTube, OEDILF.com, Kylescholz.com, Best-Practice.com, Forvo.com, as well as the generous Creative Commons community.