Definition of carbon noun from the Oxford Advanced American Dictionary

     

    carbon

     noun
    noun
    NAmE//ˈkɑrbən//
     
     
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  1. 1[uncountable] (symbol C) a chemical element. Carbon is found in all living things, existing in a pure state in two main forms (diamond and graphite ) carbon fiber
  2. 2 [uncountable] used when referring to the gas carbon dioxide in terms of the effect it has on the earth's climate in causing global warming carbon emissions/levels/taxes How do we move to a low-carbon economy?
  3. 3[countable] = carbon copy
  4. 4[countable] a piece of carbon paper
See the Oxford Advanced Learner's Dictionary entry: carbon