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Definitions

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.

Neighbouring Arab Gulf states have frequently expressed concerns about the plant's reliability and raised the risk of radioactive leaks in the event of a major earthquake.

From Barron's • Apr. 4, 2026

The extraction of the material would likely need to be conducted by an elite special operations team specially trained to remove radioactive material from a conflict zone.

From The Wall Street Journal • Mar. 29, 2026

But then, he predicted that industries would start using uranium and radium, and pretty soon we’d have … radioactive smog.

From Los Angeles Times • Mar. 26, 2026

Herrera was certainly the less radioactive candidate of the two.

From Slate • Mar. 9, 2026

Both sides understood that these tests caused radioactive fallout that threatened the entire world.

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