radiocarbon

[ 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.

Nearby words

  1. radioautograph,
  2. radioautography,
  3. radiobicipital,
  4. radiobiology,
  5. radiobroadcast,
  6. radiocarbon dating,
  7. radiocarpal,
  8. radiocarpal joint,
  9. radiocast,
  10. radiocesium

Origin of radiocarbon

First recorded in 1935–40; radio- + carbon

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019


British Dictionary definitions for radio-carbon

radiocarbon

/ (ˌreɪdɪəʊˈkɑːbən) /

noun

a radioactive isotope of carbon, esp carbon-14See carbon (def. 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

Word Origin and History for radio-carbon

radio-carbon

n.

"Carbon-14," 1940, from radio-, comb. form of radioactive, + carbon. Radio-carbon dating is attested from 1949.

Online Etymology Dictionary, © 2010 Douglas Harper

Science definitions for radio-carbon

radiocarbon

[ rā′dē-ō-kärbən ]

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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.