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Definitions

radiation

[rey-dee-ey-shuhn] / ˌreɪ diˈeɪ ʃən /




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.

In the 1960s Stephen Hawking demonstrated the Big Bang in theory, while Arno Penzias and Robert Wilson had detected the background radiation that proved decisive evidence of the event.

From The Wall Street Journal • Apr. 16, 2026

She also says with the recent Artemis II mission and future projects going deeper into space than ever before, there is also higher chance of radiation exposure and solar flares from the sun.

From BBC • Apr. 14, 2026

"It will be good research information for us to see the level of radiation, but also the type of radiation," he said.

From Barron's • Apr. 10, 2026

Astronomers have detected an excess of gamma radiation at the center of the Milky Way, which could be produced when dark matter particles collide and annihilate.

From Science Daily • Apr. 10, 2026

That’s because radiation spreads out as it travels, making it less likely to strike you the farther away you are.

From "Meltdown" by Deirdre Langeland




Vocabulary lists containing radiation