: radioactive iron
especially
: a heavy isotope having the mass number 59 that is produced in nuclear reactors or cyclotrons and is used in biochemical tracer studies
Cite this Entry
“Radioiron.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/radioiron. Accessed 7 Jul. 2026.
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