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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.

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

That process releases huge amounts of energy, no carbon emissions and limited radioactivity.

From The Wall Street Journal • Dec. 18, 2025

A becquerel is defined as a small unit of radioactivity.

From BBC • Oct. 23, 2025

It has almost no radioactivity and won’t harm the air or our pretty skies.

From Los Angeles Times • Sep. 15, 2024

Maybe it’s due to brain damage on my part: exposure to radioactivity.

From "Do Androids Dream of Electric Sheep?" by Philip K. Dick




Vocabulary lists containing radioactivity