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Showing results for radioactivity.
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

“And there’s been a lot of reasons for why this process takes so long. But, from a radiological perspective, the actual residual radioactivity at the site is pretty modest.”

From Los Angeles Times • Nov. 7, 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

Their counter clicked; there were emissions just above the background level of radioactivity, but that was enough.

From "Big Science" by Michael Hiltzik




Vocabulary lists containing radioactivity