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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

"Astronauts' immune systems could be affected from the radiation, which can lead to viruses, such as glandular fever, when they come back," Mackaill says.

From BBC • Apr. 14, 2026

With the Artemis II astronauts spending just 10 days in space, radiation is not a major concern, but the danger could rise dramatically with longer stays on the Moon.

From Barron's • Apr. 10, 2026

In some models, when two of these particles meet, they annihilate and produce high-energy radiation such as gamma rays.

From Science Daily • Apr. 10, 2026

It’s worth every bit of radiation if it means I can go out alone.

From "The Wrong Way Home" by Kate O’Shaughnessy




Vocabulary lists containing radiation