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Showing results for radioactive. Search instead for radio-isotope.
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.

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Prison bosses later faced formal censure proceedings after inmates and staff were exposed to dangerous levels of the naturally occurring radioactive gas.

From BBC Sep. 13, 2026

“I think he’s dangerously tactless in a radioactive topic” and “should exercise more caution,” Steven Pinker, author and Harvard University evolutionary psychologist, says of Cofnas’s rhetoric on genetics’ role in intelligence.

From The Wall Street Journal Aug. 21, 2026

That radioactive spider that transformed Peter Parker into Spider-Man could have bitten the class moron just as easily.

From Salon Aug. 16, 2026

The researchers examined radioactive isotopes such as Ni-56, Ni-57, and stable elements such as Mn and Ni.

From Science Daily Aug. 1, 2026

The suit’s function is to prevent radioactive dust from hitching a ride on the wearer’s body—in their hair or clothes, on their skin, or in their lungs.

From "Meltdown" by Deirdre Langeland



Vocabulary lists containing radioactive


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