Definition of irradiate in English:

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Pronunciation: /iˈrādēˌāt/


[with object]
1Expose to radiation.
Example sentences
  • The samples were irradiated at the Radiation Center of Oregon State University, USA.
  • Then, using an electron accelerator, the researchers irradiated the fragments with electron beams.
  • Depending on which elements are being tested for, the samples are irradiated with energetic neutrons.
radiate, charge, blast, shoot;
infuse, permeate, saturate, flood
informal zap, nuke
1.1Expose (food) to gamma rays to kill microorganisms.
Example sentences
  • Most herbs and spices from warm countries, common ingredients in supplements, are irradiated to kill any bacteria from insects or birds which might infect them when they are spread out on floors to be dried.
  • I've heard that some foods are now being irradiated.
  • For example, restaurants, schools and hospitals are not required to notify the public if they are serving irradiated foods.
2Illuminate (something) by or as if by shining light on it: sunlight streamed down through stained glass, irradiating the faces of family and friends
More example sentences
  • For the eternal light, irradiating the human mind, makes a certain active impression on it.
  • The TV irradiates the apartment with a ghostly blue light.
  • We are called to be salt and light, preserving and irradiating this dark, decaying world with the grace of God in our Lord Jesus Christ.
illuminate, light (up), cast light upon, brighten, shine on
literary illumine, illume



Pronunciation: /iˈrādēˌādər/
Example sentences
  • A national network of large-scale contract irradiation facilities has meant that healthcare companies no longer need to build in-house irradiators.
  • Irradiations were carried out on ice in cobalt - 60 irradiators.
  • Now that they have their foot in the door of the nation's entire food supply, the corporate food irradiators are off and running.


Late 16th century (in the sense 'emit rays, shine upon'): from Latin irradiat- 'shone upon', from the verb irradiare, from in- 'upon' + radiare 'to shine' (from radius 'ray').

Words that rhyme with irradiate


For editors and proofreaders

Syllabification: ir·ra·di·ate

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