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Showing results for irradiation. Search instead for diradiation.
Synonyms

irradiation

American  
[ih-rey-dee-ey-shuhn] / ɪˌreɪ diˈeɪ ʃən /

noun

  1. the act of irradiating.

  2. the state of being irradiated.

  3. intellectual or spiritual enlightenment.

  4. a ray of light; beam.

  5. Optics. the apparent enlargement of an object when seen against a dark background.

  6. the use of x-rays or other forms of radiation for the treatment of disease, the making of x-ray photographs, the manufacture of vitamin D, etc.

  7. exposure or the process of exposure to x-rays or other radiation.

  8. Physics. irradiance.

irradiation British  
/ ɪˌreɪdɪˈeɪʃən /

noun

  1. the act or process of irradiating or the state of being irradiated

  2. the apparent enlargement of a brightly lit object when it is viewed against a dark background

  3. a shaft of light; beam or ray

  4. med

    1. the therapeutic or diagnostic use of radiation, esp X-rays

    2. exposure of a patient to such radiation

  5. another name for radiation irradiance

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

  • postirradiation adjective

Etymology

Origin of irradiation

First recorded in 1580–90, irradiation is from the Late Latin word irradiātiōn- (stem of irradiātiō ). See ir- 1, radiation

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Another possibility was that the aurora was due to resonant scattering of nitrogen molecular ions caused by sunlight irradiation.

From Science Daily • Dec. 5, 2024

This study is the first to show that such plasma irradiation can accelerate tendon repair.

From Science Daily • May 21, 2024

Aiming to shorten recovery times, an Osaka Metropolitan University-led research group is focusing on plasma irradiation as a treatment method to speed up bone healing.

From Science Daily • Apr. 16, 2024

Interestingly, the researchers found that strong red-light irradiation at 605-660 nm triggered a reddening reaction in E. gracilis when cultured in bonito stock.

From Science Daily • Apr. 15, 2024

The following year, doctors working with John Lawrence conceived a new use for the cyclotron: the direct irradiation of patients.

From "Big Science" by Michael Hiltzik

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.