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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.

It also has bet on aneutronic fuels, which are seen as cleaner but require higher temperatures, while competitors have relied on neutronic fuels associated with more radioactivity but lower temperatures.

From MarketWatch • May 18, 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

Cabrera Services also said it’s “unlikely” the radioactivity is from large deposits of alum mud.

From Los Angeles Times • Dec. 2, 2024

But he dodged the truth about several of those discoveries, especially artificial radioactivity and fission: the cyclotroneers had been capable of making them first, had they only tried.

From "Big Science" by Michael Hiltzik




Vocabulary lists containing radioactivity


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