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  1. Dictionary
    Car·bon dat·ing
    /ˈkärbən ˌdādiNG/

    noun

    • 1. the determination of the age or date of organic matter from the relative proportions of the carbon isotopes carbon-12 and carbon-14 that it contains. The ratio between them changes as radioactive carbon-14 decays and is not replaced by exchange with the atmosphere.

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