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Showing results for radioactivity. Search instead for radio activity.
Definitions

radioactivity

[rey-dee-oh-ak-tiv-i-tee] / ˌreɪ di oʊ ækˈtɪv ɪ ti /


NOUN
radiation
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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But the presence of heavily armed soldiers, security checkpoints, and signs warning of radioactivity are anything but ordinary.

From Barron's Jun. 28, 2026

There, Erikson teased out the stealthy, almost sinister peculiarities of modern man-made hazards, like radioactivity and toxicity, and their special, traumatic effects.

From The Wall Street Journal Dec. 18, 2025

It could release vast amounts of energy with little associated radioactivity.

From BBC Dec. 18, 2025

At-211's short half-life also means it quickly loses its radioactivity, making it less toxic than longer-lived radiopharmaceuticals.

From Science Daily Nov. 11, 2025

As their report in the French journal Comptes Rendus made plain, they had discovered artificial radioactivity.

From "Big Science" by Michael Hiltzik




Vocabulary lists containing radioactivity


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