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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

Amundsen’s work is in keeping with the rest of the show, which fills two halls at the liberal arts school with visual and multimedia works that probe the persistence of radioactive materials.

From Los Angeles Times • Mar. 27, 2026

Herrera was certainly the less radioactive candidate of the two.

From Slate • Mar. 9, 2026

Tiny samples of radioactive material have twice been collected under a trial project using special tools, but full-fledged extractions are yet to take place.

From Barron's • Feb. 26, 2026

For years, they fell within the Fukushima exclusion zone, an area that was too radioactive for the residents to return.

From "Meltdown" by Deirdre Langeland