irradiate

verb
ir·​ra·​di·​ate | \ i-ˈrā-dē-ˌāt How to pronounce irradiate (audio) \
irradiated; irradiating

Definition of irradiate

transitive verb

1a : to cast rays of light upon : illuminate
b : to enlighten intellectually or spiritually
c : to affect or treat by radiant energy (such as heat) specifically : to treat by irradiation
2 : to emit like rays of light : radiate irradiating strength and comfort

intransitive verb

archaic : to emit rays : shine

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Other Words from irradiate

irradiative \ i-​ˈrā-​dē-​ˌā-​tiv How to pronounce irradiative (audio) \ adjective
irradiator \ i-​ˈrā-​dē-​ˌā-​tər How to pronounce irradiator (audio) \ noun

Synonyms & Antonyms for irradiate

Synonyms

bathe, beacon, emblaze, illume, illuminate, illumine, light, lighten

Antonyms

blacken, darken, obfuscate

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Examples of irradiate in a Sentence

The food was irradiated to kill any germs. the light from a galaxy of flashing signs irradiates the heart and soul of Las Vegas

Recent Examples on the Web

In a region of the surface called Tara Regio, NASA was able to confirm the same yellow precisely matching the salt irradiated in Hand's lab. David Grossman, Popular Mechanics, "The Yellow Part of Jupiter's Watery Moon? That's Table Salt, NASA Says," 13 June 2019 Their mission goes off with only one tiny hitch: While in space, Jean is irradiated with some kind of strange cosmic energy, rendering her even more powerful – and, unfortunately, more of a loose cannon – than before. The Washington Post, The Mercury News, "Review: If it’s the final X-Men chapter, ‘Dark Phoenix’ is appropriately funereal," 7 June 2019 Their mission goes off with only one tiny hitch: While in space, Jean is irradiated with some kind of strange cosmic energy, rendering her even more powerful — and, unfortunately, more of a loose cannon — than before. Michael O'sullivan, Twin Cities, "‘Dark Phoenix,’ X-Men’s probable swan song, is a dirge," 6 June 2019 Because my cancer was on my left side, traditional radiation would pass through my chest wall and irradiate my heart and healthy lung. The Seattle Times, "Protecting this mom’s heart from radiation," 15 Oct. 2018 Like potatoes, conventional ginger is irradiated and treated to stop it from sprouting at the supermarket. Sharon Tregaskis, Good Housekeeping, "The Easiest Way to Grow Ginger at Home," 29 July 2018 Plutonium rich in the isotope Pu-239, called weapons-grade plutonium, poses the fewest technical challenges and can be extracted from nuclear fuel that is only irradiated in a reactor for a short time. Umair Irfan, Vox, "Uranium enrichment will be a key point in talks with North Korea. Here’s what it is.," 11 June 2018 When a man hiding in a fridge is swept by this overpressure wave, he’ll certainly be battered to death inside a tumbling, irradiated oven. Joe Pappalardo, Popular Mechanics, "Hollywood Has No Idea How Nukes Work," 2 Apr. 2018 Traditional therapy irradiates tumors with X-ray waves, which are beams of photons, and all tissue along the beams’ paths get a similar dose of radiation. Bonnie Berkowitz, Washington Post, "How proton therapy attacks cancer," 5 Mar. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'irradiate.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of irradiate

1603, in the meaning defined at transitive sense 1a

History and Etymology for irradiate

Latin irradiatus, past participle of irradiare, from in- + radius ray

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Statistics for irradiate

Last Updated

12 Jul 2019

Look-up Popularity

Time Traveler for irradiate

The first known use of irradiate was in 1603

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More Definitions for irradiate

irradiate

verb

English Language Learners Definition of irradiate

technical : to expose (someone or something) to radiation

irradiate

verb
ir·​ra·​di·​ate | \ i-ˈrā-dē-ˌāt How to pronounce irradiate (audio) \
irradiated; irradiating

Kids Definition of irradiate

1 : to cast rays of light on
2 : to treat by exposure to radiation (as X-rays)

irradiate

transitive verb
ir·​ra·​di·​ate | \ ir-ˈād-ē-ˌāt How to pronounce irradiate (audio) \
irradiated; irradiating

Medical Definition of irradiate

: to affect or treat by radiant energy (as heat) specifically : to treat by exposure to radiation (as ultraviolet light or gamma rays)

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More from Merriam-Webster on irradiate

Rhyming Dictionary: Words that rhyme with irradiate

Thesaurus: All synonyms and antonyms for irradiate

Spanish Central: Translation of irradiate

Nglish: Translation of irradiate for Spanish Speakers

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