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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

This thinning allowed more harmful ultraviolet radiation from the sun to reach Earth's surface.

From Science Daily • 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

"Our prediction is that we'll see a lot more galactic cosmic radiation... which is from supernovas and is everywhere," versus radiation coming from the Sun, he said.

From Barron's • Apr. 10, 2026

The following morning, the radiation levels at the plant dropped sufficiently for reinforcements to join the Fukushima 50, bringing the total number of workers on-site to 580.

From "Meltdown" by Deirdre Langeland




Vocabulary lists containing radiation