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radioactive

[rey-dee-oh-ak-tiv] / ˌreɪ di oʊˈæk tɪv /
ADJECTIVE
active
Synonyms


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Watch Allison Macfarlane, former chairman of the Nuclear Regulatory Commission, break down why the country fell behind—and what it will take to finally build a long-term home for these radioactive materials.

From The Wall Street Journal • Jun. 24, 2026

I admit that Emerald Fennell’s adaptation of Emily Brontë’s classic novel is a radioactive choice for a best-of list.

From Salon • Jun. 10, 2026

While conventional nuclear plants split heavy atoms in a process called fission, fusion does the opposite: It combines light atomic nuclei into heavier ones, releasing enormous energy without greenhouse-gas emissions or long-lived radioactive waste.

From The Wall Street Journal • Jun. 9, 2026

The fuel will be highly radioactive for "tens of thousands of years", he said.

From Barron's • Jun. 1, 2026

The blast also created radioactive atoms—atoms with unstable nuclei that break apart, ejecting particles and rays as they decay.

From "Fallout: Spies, Superbombs, and the Ultimate Cold War Showdown" by Steve Sheinkin



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