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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.

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

The nuclear start-up announced that it had secured its first license from the Nuclear Regulatory Commission, a federal agency that oversees the civilian use of radioactive materials.

From Barron's • Mar. 17, 2026

Herrera was certainly the less radioactive candidate of the two.

From Slate • Mar. 9, 2026

They were pumping thousands of tons of seawater a day into reactors 1, 2, and 3, where it flowed around the melted cores and pooled in a radioactive mess in the buildings’ basements.

From "Meltdown" by Deirdre Langeland