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ra•di•o•i•ron



Pronunciation: (rā"dē-ō-ī'urn), [key]
n. Chem.
the radioactive isotope of iron, with atomic weight 59 and a half-life of 46 days: used chiefly as a tracer in biochemistry.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

radioiodineradioisotope

 

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