Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

  

radiation

 
/ˌreɪ·diˈeɪ·ʃən/ n [U]

Definition

physics energy in the form of waves or particles (= any of the smallest pieces of matter that make up atoms): Residents argued that electromagnetic radiation emitted by the radar towers might pose a health hazard.
(Definition of radiation n from the Cambridge Academic Content Dictionary © Cambridge University Press)

“radiation” in other dictionaries

More Results for “radiation”

Word of the Day

ride (out) the storm

to manage not to be destroyed, harmed or permanently affected by the difficult situation you...

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More