Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “irradiate”


verb [T]     /ɪˈreɪ.di.eɪt/ specialized
to treat with light or other types of radiation: The cells are irradiated so that they cannot reproduce.Radiation and radioactivity irradiated     /-eɪ.tɪd/ US  /-eɪt̬ɪd/ adjective irradiated fuel irradiated foodRadiation and radioactivity
(Definition of irradiate verb from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of irradiate

Definitions of “irradiate” in other dictionaries

Word of the Day


a person or group who receives money, advantages, etc. as a result of something else

Word of the Day


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