radiosodium

American  

[rey-dee-oh-soh-dee-uhm] / ˌreɪ di oʊˈsoʊ di əm /

noun

Chemistry.

1. the radioactive isotope of sodium having an atomic mass of 24 and a half-life of 14.9 hours: used as a tracer in biochemistry.

---

Etymology

Origin of radiosodium

First recorded in 1930–35; radio- + sodium

Example Sentences

At the Nobel Prize ceremony that December, honoring the Joliots for their discovery of artificial radioactivity, the presenter took a brief detour to mention Lawrence’s preparation of radiosodium and expressing the hope that “it can be used in the same way as radium salts in medical applications.”

From Literature