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radioiodine
radioisotope
radiolabel
radiolarian
radiolocation
radiology
radiolucent
radiolysis
radiometer
radiometric dating
radiomimetic
radionics
radionuclide
radiopaque
radiopharmaceutical
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radiocarbon
ra·di·o·car·bon [ ràydee ō krbən ]


noun 
Definition:
 
radioactive carbon: a radioactive form of carbon, especially the isotope of carbon that has a mass number of 14
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