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Showing results for radioactive. Search instead for radiopacify.
Definitions

radioactive

[ray-dee-oh-ak-tiv] / ˌreɪ di oʊˈæk tɪv /
ADJECTIVE
active
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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Trees absorb carbon from the atmosphere during photosynthesis, including small amounts of radioactive carbon known as radiocarbon.

From Science Daily ● Oct. 26, 2026

These persistent particles could continue releasing radioactive substances long after other remnants have broken down, complicating efforts to assess future contamination and health risks.

From Science Daily ● Oct. 23, 2026

Individual particles can differ in composition, structure, and resistance to environmental weathering, potentially affecting when they release radioactive materials.

From Science Daily ● Oct. 23, 2026

If this behavior occurs more widely, it could help limit the movement of radioactive contaminants into nearby soil and water.

From Science Daily ● Oct. 23, 2026

More than 75 percent of that stored water still carried more radioactive isotopes than the Japanese government considered safe, and the need for water storage continued to grow.

From "Meltdown" by Deirdre Langeland


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