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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

He also said there was radiological and chemical contamination at the site, but that the level of radioactivity outside had remained unchanged and at normal levels.

From BBC • Jun. 16, 2025

For every following year, there is a little less radioactivity in newly formed cells, which means that they can be 'dated'.

From Science Daily • Nov. 21, 2024

But there are more clicks than can be accounted for by radioactivity.

From "Cosmos" by Carl Sagan




Vocabulary lists containing radioactivity


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