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carbanion
carbapenem
carbarn
carbaryl
carbazole
carbene
carbenicillin
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carbon 14
car·bon 14 [ krbən fawr tn ]


noun 
Definition:
 
carbon isotope: a naturally radioactive isotope of carbon with atomic mass of 14 and a half-life of 5,780 years. Use: as tracer, in carbon dating.
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