radioiron

[ rey-dee-oh-ahy-ern ]

/ ˌreɪ di oʊˈaɪ ərn /

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noun Chemistry.

the radioactive isotope of iron, with atomic weight 59 and a half-life of 46 days: used chiefly as a tracer in biochemistry.

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CAN YOU ANSWER THESE COMMON GRAMMAR DEBATES?

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Question 1 of 7

Which sentence is correct?

His boss, whom he admires, is waiting to meet with him about the big project.

His boss, who he admires, is waiting to meet with him about the big project.

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Origin of radioiron

First recorded in 1955–60; radio- + iron

Words nearby radioiron

radio horizon, radioimmunoassay, radioimmunology, radio interferometer, radioiodine, radioiron, radioisotope, radio knife, radiolabel, radioland, radiolarian