- radioiron
- \\“+\ noun
Etymology: radio- + iron: radioactive iron; especially : a heavy isotope having the mass number 59 produced in nuclear reactors or cyclotrons and used chiefly in biochemical and metallurgical tracer studies
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/ray'dee oh uy"euhrn/, 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.[1955-60; RADIO- + IRON]
Useful english dictionary. 2012.