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Definition of Carbon-14
1. Noun. (isotope) a radioactive isotopes of carbon, (nuclide 14 6 C), having six protons and eight neutrons; it is used in radiocarbon dating ¹
¹ Source: wiktionary.com
Medical Definition of Carbon-14
1. A beta-emitter with a half-life of 5715 years, widely used as a tracer in studying various aspects of metabolism; naturally occurring 14C, arising from cosmic ray bombardment, is used to date relics containing natural carbonaceous materials. (05 Mar 2000)