“+ 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
“+ 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
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012