Thesaurus.com
Dictionary.com
Showing results for radioactive.
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.

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 license specifically applies to Atomic Alchemy, a wholly-owned subsidiary dealing in the production of radioactive isotopes.

From Barron's • Mar. 18, 2026

Herrera was certainly the less radioactive candidate of the two.

From Slate • Mar. 9, 2026

In the end, Fennell took home the statue for best original screenplay, cementing her prowess in Oscar gold — and turning herself radioactive forevermore.

From Salon • Feb. 23, 2026

In the waters next to the plant, radioactive cesium settled on the seafloor and continues to be found in fish today.

From "Meltdown" by Deirdre Langeland