irradiation

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irradiation

  • /ɪˌɹeɪdiˈeɪʃən/

Rhymes with -eɪʃən

Where it comes from

From Middle French irradiacion, from Latin irradiatio. Morphologically irradiate + -ion.

noun irradiations

  1. uncountable a process of sterilization whereby radiation is passed through a bag containing food, utensils, etc., to sterilize the contents.
  2. countable, uncountable Synonym of radiotherapy.

    Similar: radiotherapy

  3. countable, obsolete, uncountable illumination; irradiance; brilliance.
  4. countable, figuratively, obsolete, uncountable mental light or illumination.
  5. countable, obsolete, uncountable The apparent enlargement of a bright object seen upon a dark ground, due to the fact that the portions of the retina around the image are stimulated by the intense light; as when a dark spot on a white ground appears smaller, or a white spot on a dark ground larger, than it really is, especially when a little out of focus.

Thesaurus

Closest in meaning: radiation therapy, radiotherapy, actinotherapy, radiographic, x-ray, radiation, irradiance, ionisation, ionization, illumination, treatment, dose, xerostomia, outreach, exhibition, referral

Translations

Every language

noun an act of irradiating, or state of being irradiated

हिन्दीकिरणन kiraṇan
Portuguêsirradiação
Françaisirradiation
DeutschBestrahlung
Italianoirradiazione
Ελληνικάακτινοβολία aktinovolía
Русскийоблуче́ние oblučénije, излуче́ние izlučénije
العربيةتَشَعُّع tašaʕʕuʕ, تَشْعِيع tašʕīʕ

noun a process of sterilisation

DeutschBestrahlung
Italianosterilizzazione
Ελληνικάαποστείρωση aposteírosi

noun obsolete: illumination; irradiance; brilliance

Italianoirradiazione
Русскийлучеза́рность lučezárnostʹ, блеск blesk, лучи́стость lučístostʹ, сия́ние sijánije, освеще́ние osveščénije

noun obsolete, figurative: mental light or illumination

Italianoilluminazione
Ελληνικάέκλαμψη éklampsi

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Cite this
MLA

"irradiation." Wiktionary, via Micwyn, micwyn.com/word/irradiation. Accessed 6 Nov. 2026.

APA

irradiation. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/irradiation

Chicago

"irradiation." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/irradiation.

BibTeX
@misc{irradiation_2026,
  title = {irradiation},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/irradiation},
  urldate = {2026-11-06}
}