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.

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

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.