Thesaurus.com
Dictionary.com
Definitions

radioactive

[ray-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.

See Examples For:

This imaging technique uses radioactive tracers introduced into the bloodstream to reveal biological activity and the distribution of specific substances.

From Science Daily ● Nov. 5, 2026

However, the researchers emphasize that their findings should not be interpreted as evidence that Chornobyl's radioactive contamination is becoming harmless.

From Science Daily ● Oct. 23, 2026

The relatively small sample means the findings cannot yet establish how radioactive particles behave throughout the entire contaminated region.

From Science Daily ● Oct. 23, 2026

This suggests that at least some of the radioactive debris produced by the Chornobyl disaster is more chemically stable than researchers previously believed.

From Science Daily ● Oct. 23, 2026

The new basement shelter had a four-inch-thick door, Army cots and canned food, a direct phone line to the Pentagon’s bomb shelter, and a shower to wash off radioactive fallout.

From "Fallout: Spies, Superbombs, and the Ultimate Cold War Showdown" by Steve Sheinkin


Vocabulary lists containing radioactive

Random Word

Spin the wheel and learn a new word!

Get a word

Vocabulary.com logo
by dictionary.com

Look it up. Learn it forever.

Remember new words for good with VocabTrainer. Expand your vocabulary effortlessly with personalized learning tools that adapt to your goals.

Take me to Vocabulary.com