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- noun physics A
long-lived radioactive isotopeof chlorine, 3617Cl, having seventeen protonsand nineteen neutrons, and a half-lifeof 3x105 years; it can be used to datesamples of groundwater
Sorry, no etymologies found.
Tritium, an isotope of hydrogen, and chlorine-36 were also both absent from the Naimona'nyi cores, she said.