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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.

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

Lynas however, says its by-product from rare earth refining produces a non-toxic, non-radioactive magnesium-rich gypsum and an iron phosphate with a very low level of naturally occurring radioactive material.

From Barron's • Apr. 22, 2026

Forty years later, the highly radioactive remains of the plant are in a warzone.

From BBC • Apr. 18, 2026

If left alone, the groundwater would continue to flow toward the sea, carrying radioactive isotopes from the reactors with it, so workers pumped hundreds of gallons of water from the reactor basements every day.

From "Meltdown" by Deirdre Langeland



Vocabulary lists containing radioactive


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