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Showing results for radioactive. Search instead for radioactivel.
Definitions

radioactive

[rey-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.

The nonrenewable gas is produced by radioactive decay deep under the earth and escapes into space once released.

From The Wall Street Journal • Mar. 31, 2026

But then, he predicted that industries would start using uranium and radium, and pretty soon we’d have … radioactive smog.

From Los Angeles Times • Mar. 26, 2026

Herrera was certainly the less radioactive candidate of the two.

From Slate • Mar. 9, 2026

A 22-metre robot arm will help remove a third sample of radioactive debris from inside Japan's stricken Fukushima nuclear plant, its operator said Thursday, as it unveiled the snake-like device.

From Barron's • Feb. 26, 2026

The new basement shelter had a four-inch-thick door, Army cots and canned food, a direct phone line to the Pentagon’s bomb shelter, and a shower to wash off radioactive fallout.

From "Fallout: Spies, Superbombs, and the Ultimate Cold War Showdown" by Steve Sheinkin