Thesaurus.com
Dictionary.com
Showing results for radioactive. Search instead for Radio_5_Live.
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.

The Swiss drugmaker released data from an early-stage clinical trial for its 225Ac-PSMA-617 drug candidate that showed so-called alpha particle radioactive isotopes should work in fighting prostate cancer, the analyst says.

From The Wall Street Journal • Jun. 2, 2026

His voice echoed in the damp tunnel where the spent nuclear fuel will be buried in holes drilled into the bedrock, where it will remain harmfully radioactive for thousands of years.

From Barron's • Jun. 1, 2026

The director-general of the IAEA, Rafael Grossi, has warned repeatedly about the risk of a radioactive incident at such plants.

From Salon • May 21, 2026

“The dangers are so much different. Instead of an explosion, it just turns off. There’s no radioactive waste. So this light touch is exactly what the Congress overwhelmingly … wanted the NRC to do.”

From MarketWatch • May 18, 2026

In the 1980s, the KGB had begun marking suspected foreign agents with an invisible radioactive dust that could be picked up with radiation sensors.

From "Spies: The Secret Showdown Between America and Russia" by Marc Favreau



Vocabulary lists containing radioactive


Vocabulary.com logo
by dictionary.com

Look it up. Learn it forever.

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

Take me to Vocabulary.com