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[rey-dee-oh-kahr-buh n] /ˌreɪ di oʊˈkɑr bən/
noun, Chemistry.
Also called carbon 14. a radioactive isotope of carbon with mass number 14 and a half-life of about 5730 years: widely used in the dating of organic materials.
any radioactive isotope of carbon.
Origin of radiocarbon
First recorded in 1935-40; radio- + carbon Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for radiocarbon
Contemporary Examples
Historical Examples
  • Philon went on to explain the radiocarbon dating of the book.

    The House from Nowhere Arthur G. Stangland
  • Some of the carbon compounds in the various artifacts showed a faint trace of radiocarbon, others showed none.

    Dead Giveaway Gordon Randall Garrett
British Dictionary definitions for radiocarbon


a radioactive isotope of carbon, esp carbon-14 See carbon (sense 1)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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radiocarbon in Science
A radioactive isotope of carbon, especially carbon 14. Other radiocarbons include carbon 10, carbon 11, carbon 15, and carbon 16.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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