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[rey-dee-oh-kahr-buh n] /ˌreɪ di oʊˈkɑr bən/

noun, Chemistry.
Also called carbon 14. a radioactive isotope of with mass number 14 and a half-life of about 5730 years: widely used in the dating of organic materials.
any radioactive isotope of .
a radioactive isotope of carbon, esp carbon-14 See carbon (sense 1)

“Carbon-14,” 1940, from radio-, comb. form of radioactive, + carbon. Radio-carbon dating is attested from 1949.
A radioactive isotope of carbon, especially carbon 14. Other radiocarbons include carbon 10, carbon 11, carbon 15, and carbon 16.


Read Also:

  • Radiocarbon-dating

    noun 1. the determination of the age of objects of organic origin by measurement of the radioactivity of their carbon content. noun 1. a technique for determining the age of organic materials, such as wood, based on their content of the radioisotope 14C acquired from the atmosphere when they formed part of a living plant. […]

  • Radiocardiogram

    radiocardiogram ra·di·o·car·di·o·gram (rā’dē-ō-kär’dē-ə-grām’) n. A graphic record of the variation with time of the concentration of an injected radioisotope within the cardiac chambers.

  • Radiocardiography

    radiocardiography ra·di·o·car·di·og·ra·phy (rā’dē-ō-kär’dē-ŏg’rə-fē) n.

  • Radiocarpal

    radiocarpal ra·di·o·car·pal (rā’dē-ō-kär’pəl) adj.

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