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Showing results for radioactive. Search instead for radioaktives.
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.

If it works, it could provide potentially limitless electricity without greenhouse gases or long-lived radioactive waste.

From The Wall Street Journal • May 1, 2026

He was the first to have shape-shifting powers, which he gained after encountering a mysterious radioactive pool of protoplasm.

From Los Angeles Times • Apr. 22, 2026

Under the latest agreement, the government said the company must now halt all activities that produce radioactive waste within five years of its renewed operating licence.

From Barron's • Apr. 22, 2026

Reactor number four at the Chernobyl power plant – in what is now northern Ukraine - had exploded, spewing out radioactive material that would spread across swathes of Europe.

From BBC • Apr. 18, 2026

Radiation readings from the USS Ronald Reagan confirmed that radioactive isotopes had already blown miles out to sea.

From "Meltdown" by Deirdre Langeland



Vocabulary lists containing radioactive