[rey-dee-oh-kahr-buh n] /ˌreɪ di oʊˈkɑr bən/
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.
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 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 ra·di·o·car·di·og·ra·phy (rā’dē-ō-kär’dē-ŏg’rə-fē) n.
radiocarpal ra·di·o·car·pal (rā’dē-ō-kär’pəl) adj.